2b:null 2c:["$","title",null,{"children":"インディーゲームブームの理由を探る | TMU Dataviz Class | Observable"}] 31:T76b,htl.html`

${renderBalloon("2015: 価値観の変革", 0, 0)}

${renderGameIntro( 391540, "UNDERTALE", "「誰も死ななくていいRPG」。モンスターの世界に落ちた子供が、慈悲や戦いを選びながら進む。独創的なメタ要素と心に響く音楽が、世界中に熱狂を生んだインディーの金字塔。", 0, 0 )}

${renderBalloon("2023: 新たな様式美", 0, 500)}

${renderGameIntro( 2653790, "8番出口", "無限に続く地下通路から脱出する「間違い探し」シミュレーター。異変を見つけたら引き返すという極めてシンプルなルールが、SNSで爆発的なヒットを記録した。", 0, 0 )}

Current Industry

VG Insightsの調査によれば、現在Steamの全作品の 99%以上がインディー作品である。
個人のアイデアが、かつてない規模で世界に届く時代が到来している。

`32:T52b,chart = { // 選択に応じてデータをフィルタリング（体験版等は最初から除外） const filteredData = selectedYear === "すべて" ? combined_data : combined_data.filter((d) => d.year === selectedYear); return Plot.plot({ width: 1000, height: 600, grid: true, title: `${selectedYear}年 Steam主要タイトル価格分布`, subtitle: `表示数: ${filteredData.length} タイトル`, x: { label: "価格 (円) →", tickFormat: (d) => `¥${d.toLocaleString()}`, domain: [0, 11000] }, y: { label: "↑ ユーザー評価 (%)", domain: [50, 100] // 評価が低いゲームも見えるように範囲を調整 }, color: { domain: ["Major", "Indie"], range: ["#2196F3", "#4CAF50"], legend: true }, marks: [ Plot.dot(filteredData, { x: "price", y: "rating", r: 6, fill: "type", stroke: "white", fillOpacity: 0.7, // 重なりを避けるための微細なジッター dx: (d) => (Math.random() - 0.5) * 5, title: (d) => `${d.name}\n年度: ${d.year}\n種別: ${ d.type }\n価格: ¥${d.price.toLocaleString()}\n評価: ${d.rating}%`, tip: true }) ] }); }33:T71a,htl.html`

${renderFrame( "Summary: 本調査のまとめ", htl.html`

本調査では、Steamにおけるインディーゲームの現状を、数・価格・多様性の3つの観点から分析した。

市場の拡大： 2014年のシステム刷新以降、年間リリース数は右肩上がりに増加し、現在は全タイトルの99%以上がインディー作品で占められている。
価値の逆転： 低価格帯（3,000円以下）でありながら、ユーザー満足度はメジャータイトルと同等、あるいはそれ以上の水準を維持している。
多様性の確保： ホラーやローグライクといったニッチジャンルにおいて、インディーが市場の供給をほぼ独占し、ユーザーの細かなニーズを埋めている。

今後の展望：

開発ツールの普及やAI技術の活用により、個人がゲームを世に出すハードルはさらに下がっていくことが予想される。今後は「数」の争いではなく、膨大な選択肢の中からいかにして独自の表現を見出し、ユーザーとのコミュニティを築いていくかが、制作の鍵となるだろう。

2026.02.13 / Data Source: VG Insights, Steam API

` )}

`34:T4c2,renderFrame = (titleText, bodyContent) => { return htl.html`

${titleText}

          
          ${bodyContent}
        

`; }35:T763,// 年間ゲームリリース数 release_trend = [ { year: 2006, type: "Games", count: 70 }, { year: 2006, type: "Limited", count: 0 }, { year: 2007, type: "Games", count: 135 }, { year: 2007, type: "Limited", count: 0 }, { year: 2008, type: "Games", count: 242 }, { year: 2008, type: "Limited", count: 0 }, { year: 2009, type: "Games", count: 379 }, { year: 2009, type: "Limited", count: 1 }, { year: 2010, type: "Games", count: 274 }, { year: 2010, type: "Limited", count: 1 }, { year: 2011, type: "Games", count: 281 }, { year: 2011, type: "Limited", count: 0 }, { year: 2012, type: "Games", count: 302 }, { year: 2012, type: "Limited", count: 0 }, { year: 2013, type: "Games", count: 436 }, { year: 2013, type: "Limited", count: 0 }, { year: 2014, type: "Games", count: 1713 }, { year: 2014, type: "Limited", count: 0 }, { year: 2015, type: "Games", count: 2821 }, { year: 2015, type: "Limited", count: 1 }, { year: 2016, type: "Games", count: 4648 }, { year: 2016, type: "Limited", count: 4 }, { year: 2017, type: "Games", count: 6916 }, { year: 2017, type: "Limited", count: 13 }, { year: 2018, type: "Games", count: 5964 }, { year: 2018, type: "Limited", count: 2911 }, { year: 2019, type: "Games", count: 2816 }, { year: 2019, type: "Limited", count: 5254 }, { year: 2020, type: "Games", count: 3163 }, { year: 2020, type: "Limited", count: 6490 }, { year: 2021, type: "Games", count: 3399 }, { year: 2021, type: "Limited", count: 7845 }, { year: 2022, type: "Games", count: 3622 }, { year: 2022, type: "Limited", count: 8666 }, { year: 2023, type: "Games", count: 4048 }, { year: 2023, type: "Limited", count: 10046 }, { year: 2024, type: "Games", count: 4420 }, { year: 2024, type: "Limited", count: 14113 }, { year: 2025, type: "Games", count: 4560 }, { year: 2025, type: "Limited", count: 15458 } ]36:T536,renderGameIntro = (appId, title, description, top, left) => { const imgUrl = `https://cdn.cloudflare.steamstatic.com/steam/apps/${appId}/header.jpg`; const storeUrl = `https://store.steampowered.com/app/${appId}/`; return htl.html`

${title}

${description}

`; }37:T20b8,combined_data = [ // --- 【2025年リスト（43タイトル）】 --- { name: "Counter-Strike 2", price: 0, rating: 86, type: "Major", year: 2025 }, { name: "Monster Hunter Wilds", price: 9900, rating: 88, type: "Major", year: 2025 }, { name: "PUBG: BATTLEGROUNDS", price: 0, rating: 60, type: "Major", year: 2025 }, { name: "Dota 2", price: 0, rating: 81, type: "Major", year: 2025 }, { name: "Battlefield™ 6", price: 9800, rating: 71, type: "Major", year: 2025 }, { name: "Marvel Rivals", price: 0, rating: 80, type: "Major", year: 2025 }, { name: "Hollow Knight: Silksong", price: 3400, rating: 93, type: "Indie", year: 2025 }, { name: "ARC Raiders", price: 5800, rating: 87, type: "Indie", year: 2025 }, { name: "Schedule I", price: 2980, rating: 97, type: "Indie", year: 2025 }, { name: "Path of Exile 2", price: 0, rating: 75, type: "Indie", year: 2025 }, { name: "ELDEN RING NIGHTREIGN", price: 5720, rating: 87, type: "Major", year: 2025 }, { name: "Borderlands® 4", price: 9800, rating: 63, type: "Major", year: 2025 }, { name: "Escape from Duckov", price: 2680, rating: 94, type: "Indie", year: 2025 }, { name: "R.E.P.O.", price: 980, rating: 95, type: "Indie", year: 2025 }, { name: "Apex Legends", price: 0, rating: 67, type: "Major", year: 2025 }, { name: "Rust", price: 5200, rating: 87, type: "Indie", year: 2025 }, { name: "Split Fiction", price: 6900, rating: 97, type: "Indie", year: 2025 }, { name: "Kingdom Come: Deliverance II", price: 8800, rating: 93, type: "Major", year: 2025 }, { name: "Where Winds Meet", price: 0, rating: 85, type: "Major", year: 2025 }, { name: "Delta Force", price: 0, rating: 82, type: "Major", year: 2025 }, { name: "NARAKA: BLADEPOINT", price: 0, rating: 71, type: "Major", year: 2025 }, { name: "Dispatch", price: 4400, rating: 97, type: "Indie", year: 2025 }, { name: "The Elder Scrolls IV: Oblivion Remastered", price: 7400, rating: 85, type: "Major", year: 2025 }, { name: "Grand Theft Auto V Legacy", price: 0, rating: 96, type: "Major", year: 2025 }, { name: "Palworld", price: 3400, rating: 93, type: "Indie", year: 2025 }, { name: "Banana", price: 0, rating: 90, type: "Indie", year: 2025 }, { name: "Bongo Cat", price: 0, rating: 97, type: "Indie", year: 2025 }, { name: "Stellar Blade™", price: 8980, rating: 92, type: "Major", year: 2025 }, { name: "Dune: Awakening", price: 4990, rating: 72, type: "Major", year: 2025 }, { name: "Grand Theft Auto V Enhanced", price: 3080, rating: 88, type: "Major", year: 2025 }, { name: "Path of Exile", price: 0, rating: 87, type: "Indie", year: 2025 }, { name: "HELLDIVERS™ 2", price: 4480, rating: 77, type: "Major", year: 2025 }, { name: "Warframe", price: 0, rating: 87, type: "Major", year: 2025 }, { name: "PEAK", price: 880, rating: 94, type: "Indie", year: 2025 }, { name: "Baldur's Gate 3", price: 8499, rating: 96, type: "Indie", year: 2025 }, { name: "Stardew Valley", price: 1480, rating: 98, type: "Indie", year: 2025 }, { name: "Last Epoch", price: 4500, rating: 75, type: "Indie", year: 2025 }, { name: "Wallpaper Engine", price: 499, rating: 97, type: "Indie", year: 2025 }, { name: "Tom Clancy's Rainbow Six® Siege X", price: 2640, rating: 82, type: "Major", year: 2025 }, { name: "Clair Obscur: Expedition 33", price: 7400, rating: 94, type: "Indie", year: 2025 }, { name: "Call of Duty®", price: 9800, rating: 68, type: "Major", year: 2025 }, { name: "skate.", price: 0, rating: 65, type: "Major", year: 2025 }, { name: "DELTARUNE", price: 0, rating: 97, type: "Indie", year: 2025 }, // --- 【2024年リスト（48タイトル）】 --- { name: "Black Myth: Wukong", price: 7020, rating: 96, type: "Major", year: 2024 }, { name: "Palworld", price: 3400, rating: 93, type: "Indie", year: 2024 }, { name: "Counter-Strike 2", price: 0, rating: 86, type: "Major", year: 2024 }, { name: "Dota 2", price: 0, rating: 81, type: "Major", year: 2024 }, { name: "Banana", price: 0, rating: 90, type: "Indie", year: 2024 }, { name: "PUBG: BATTLEGROUNDS", price: 0, rating: 60, type: "Major", year: 2024 }, { name: "ELDEN RING", price: 9240, rating: 92, type: "Major", year: 2024 }, { name: "Path of Exile 2", price: 0, rating: 75, type: "Indie", year: 2024 }, { name: "Marvel Rivals", price: 0, rating: 80, type: "Major", year: 2024 }, { name: "Apex Legends", price: 0, rating: 67, type: "Major", year: 2024 }, { name: "HELLDIVERS™ 2", price: 4480, rating: 77, type: "Major", year: 2024 }, { name: "NARAKA: BLADEPOINT", price: 0, rating: 71, type: "Major", year: 2024 }, { name: "THRONE AND LIBERTY", price: 0, rating: 65, type: "Major", year: 2024 }, { name: "Call of Duty®", price: 9800, rating: 68, type: "Major", year: 2024 }, { name: "Destiny 2", price: 0, rating: 81, type: "Major", year: 2024 }, { name: "Baldur's Gate 3", price: 8499, rating: 96, type: "Indie", year: 2024 }, { name: "The First Descendant", price: 0, rating: 55, type: "Major", year: 2024 }, { name: "Last Epoch", price: 4500, rating: 75, type: "Indie", year: 2024 }, { name: "Stardew Valley", price: 1480, rating: 98, type: "Indie", year: 2024 }, { name: "Once Human", price: 0, rating: 72, type: "Major", year: 2024 }, { name: "Path of Exile", price: 0, rating: 87, type: "Indie", year: 2024 }, { name: "Dragon's Dogma 2", price: 8990, rating: 60, type: "Major", year: 2024 }, { name: "Warhammer 40,000: Space Marine 2", price: 9969, rating: 82, type: "Major", year: 2024 }, { name: "Grand Theft Auto V Legacy", price: 0, rating: 96, type: "Major", year: 2024 }, { name: "Content Warning", price: 920, rating: 95, type: "Indie", year: 2024 }, { name: "Lethal Company", price: 1200, rating: 97, type: "Indie", year: 2024 }, { name: "Rainbow Six Siege", price: 2640, rating: 82, type: "Major", year: 2024 }, { name: "Rust", price: 5200, rating: 87, type: "Indie", year: 2024 }, { name: "Fallout 4", price: 2200, rating: 83, type: "Major", year: 2024 }, { name: "Satisfactory", price: 3400, rating: 97, type: "Indie", year: 2024 }, { name: "Team Fortress 2", price: 0, rating: 93, type: "Major", year: 2024 }, { name: "Manor Lords", price: 4980, rating: 88, type: "Indie", year: 2024 }, { name: "Deadlock", price: 0, rating: 85, type: "Major", year: 2024 }, { name: "Monster Hunter: World", price: 2990, rating: 87, type: "Major", year: 2024 }, { name: "Enshrouded", price: 3400, rating: 86, type: "Indie", year: 2024 }, { name: "Wallpaper Engine", price: 499, rating: 97, type: "Indie", year: 2024 }, { name: "Farming Simulator 25", price: 6200, rating: 80, type: "Indie", year: 2024 }, { name: "World of Warships", price: 0, rating: 80, type: "Major", year: 2024 }, { name: "V Rising", price: 3400, rating: 88, type: "Major", year: 2024 }, { name: "The Descendant", price: 0, rating: 50, type: "Major", year: 2024 }, { name: "7 Days to Die", price: 2480, rating: 88, type: "Indie", year: 2024 }, { name: "DRAGON BALL: Sparking! ZERO", price: 8910, rating: 90, type: "Major", year: 2024 }, { name: "S.T.A.L.K.E.R. 2: Heart of Chornobyl", price: 7950, rating: 80, type: "Indie", year: 2024 }, { name: "War Thunder", price: 0, rating: 79, type: "Major", year: 2024 }, { name: "Warframe", price: 0, rating: 87, type: "Major", year: 2024 }, { name: "Delta Force", price: 0, rating: 82, type: "Major", year: 2024 }, { name: "Factorio", price: 4000, rating: 97, type: "Indie", year: 2024 }, { name: "THE FINALS", price: 0, rating: 75, type: "Indie", year: 2024 } ]38:[{"id":"844ee695a3061ab530bdad9553e2ada58d256af324b498c8e5ffd4deeac21ce9cef88c62fd1abae75aad5df8c0106d704056b35aa297a47e3767ec4dfd365334","href":"https://static.observableusercontent.com/files/844ee695a3061ab530bdad9553e2ada58d256af324b498c8e5ffd4deeac21ce9cef88c62fd1abae75aad5df8c0106d704056b35aa297a47e3767ec4dfd365334","name":"balloon@1.png","type":"image/png","lastModified":1769761475200.66,"size":24342},{"id":"d09836affd238e0a9dec68c9f99026900161f976876912b0625dcfab10fcd1954a1ca85a87cfc7cf82113e667b4b311a2a8de7c00465827c3aa0d533eed26f9b","href":"https://static.observableusercontent.com/files/d09836affd238e0a9dec68c9f99026900161f976876912b0625dcfab10fcd1954a1ca85a87cfc7cf82113e667b4b311a2a8de7c00465827c3aa0d533eed26f9b","name":"window1.png","type":"image/png","lastModified":1769760149070.567,"size":12855},{"id":"112692b0b062406a1264941bc8a77a7b0714f930110442c101d63ced4303aad291dbbc603fc6c88b14872a1a166457bee1b3288c00d5be6b3bc0a8fdc565d58f","href":"https://static.observableusercontent.com/files/112692b0b062406a1264941bc8a77a7b0714f930110442c101d63ced4303aad291dbbc603fc6c88b14872a1a166457bee1b3288c00d5be6b3bc0a8fdc565d58f","name":"インディーゲームサムネ3@1.png","type":"image/png","lastModified":1770015896739.432,"size":6390592}] 2f:{"id":"113dec1b7f52cc0c","slug":null,"title":"インディーゲームブームの理由を探る","thumbnail":"f994a94d3544feaf695519d8ddebdf1bf07baf46b2747e95e43b533571352799","access_level":"public","create_time":"$D2026-01-18T01:26:52.245Z","update_time":"$D2026-02-13T07:22:19.943Z","view_time":null,"first_public_time":"$D2026-02-13T06:52:26.532Z","has_unpublished_edits":null,"fork":true,"stars":0,"starred":false,"owner":{"type":"team","id":"fdca81b2f5eb7de5","login":"tmu-dataviz-class","name":"TMU Dataviz Class","avatar_url":"https://avatars-next.observableusercontent.com/7549232d2187bf99f5cfbd7780436d4ce1cc4257fe3eae6585b5ff10b836499b","tier":"education_2026"},"version":472,"publish_version":null,"role":null,"authored":false,"authors":[{"type":"individual","id":"b0eb4e2cf8c6bd00","login":"picamoq","name":"picamoq","avatar_url":"https://avatars-next.observableusercontent.com/e4b82ce986a385a96772cc41340eb3f276386140e722aced947af04e3f58709c","tier":null}],"members":[{"type":"individual","id":"b0eb4e2cf8c6bd00","login":"picamoq","name":"picamoq","avatar_url":"https://avatars-next.observableusercontent.com/e4b82ce986a385a96772cc41340eb3f276386140e722aced947af04e3f58709c","tier":null,"role":"editor"},{"type":"team","id":"fdca81b2f5eb7de5","login":"tmu-dataviz-class","name":"TMU Dataviz Class","avatar_url":"https://avatars-next.observableusercontent.com/7549232d2187bf99f5cfbd7780436d4ce1cc4257fe3eae6585b5ff10b836499b","tier":"education_2026","role":"editor"}],"comments":[],"custom_thumbnail":true,"trashed":false,"lapsed":null,"subscribed":null,"forks":0,"collection":{"id":"41879bbbdd9fcc15","slug":"2025-final-project","title":"2025 Final Project","owner":{"id":"fdca81b2f5eb7de5","login":"tmu-dataviz-class","name":"TMU Dataviz Class"}},"type":"notebook","body":{"titling":"auto","title":"インディーゲームブームの理由を探る","cells":[{"id":0,"value":"# インディーゲームブームの理由を探る","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"","database":"$undefined"},{"id":363,"value":"untitled = FileAttachment(\"インディーゲームサムネ3@1.png\").image()","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":105,"value":"`","pinned":false,"hidden":false,"mode":"html","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"","database":"$undefined"},{"id":233,"value":"html``","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":8,"value":"htl.html`\n

\n \n

\n ${renderFrame(\n \"インディーゲームとは...？\",\n htl.html`\n

インディーゲームとは「インディペンデントゲーム」の略称で、大手パブリッシャーの援助を受けず、個人や小規模チームによって開発されるゲームを指す。\n近年ではSteamをはじめとするデジタル配信プラットフォームの普及により、開発者が直接ユーザーに作品を届けられる環境が整い、インディーゲーム市場は急速な成長を遂げている。

\n\n

代表的な作品としては、世界で最も売れたゲームである「Minecraft」や、独創的なストーリーとゲームシステムで高い評価を得た「UNDERTALE」などが挙げられる。\n国内でも「8番出口」や「スイカゲーム」といった作品がSNSを中心に大きな話題を呼んだ。

\n\n

個人的に、インディーゲーム最大の魅力は、大手タイトルでは実現しにくい実験的で尖ったゲーム体験にあると思う。商業的な制約が比較的少ないため、開発者の個性や創意工夫が色濃く反映された作品が多い。\nまた、クリアまでのプレイ時間が数時間程度と短めで、価格も数百円程度の手頃な作品が多いため、購入ハードルが低い点も大きな魅力だろう。

\n `\n )}\n

\n\n\n ${renderGameLink(391540, 320, 200, 640, 520, -2)}\n\n ${renderGameLink(2653790, 360, 230, 700, 250, 3)}\n\n\n

\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":208,"value":"// 新しいセルを作り、これを貼り付ける\nrenderFrame(\n \"インディーゲームが今アツい!!\",\n htl.html`\n

「8番出口」や「スイカゲーム」などのタイトルにピンと来た人もいるだろうが、インディーゲームは今、大手タイトルに劣らないヒット作を連発している。

例えば、「某有名ゲームに酷似している」と世界中で賛否両論を巻き起こした、2024年リリースの日本発インディーゲーム、「パルワールド」。リリースからわずか1ヶ月で、Steamでの総プレイヤー数が2,500万人を突破し、同時接続数では歴代二位の210万人を記録するという、驚異的な数字を残した。\n また、先ほども触れた個人開発ゲーム、「8番出口」も、その革新的なゲーム性でDL数100万本を超える異例のヒットとなり、世界中で「8番ライクゲーム」のブームを巻き起こした。新たなジャンルを開拓したゲームと言っても過言ではないだろう。

\n`\n)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":249,"value":"renderFrame(\n \"調査\",\n htl.html`\n

そんな今話題のインディーゲーム。\n社会現象を巻き起こすようなタイトルが連発されるようになったのは、ごく最近のことに思えるが、一体いつ頃から盛り上がりを見せていたのだろうか？\nまた、大手タイトルのゲームに負けないよう、どんな工夫をしているのだろう。

\n\n ${renderBalloon(\"Steam 年間リリース数推移 (2006-2025)\", -60, -45)}\n\n

\n \n

\n ${viewof play_trigger}\n

\n\n ${chart_release}\n \n

\n\n

\n ${renderFrame(\n \"分析：価格と満足度の関係\",\n htl.html`\n

「安かろう悪かろう」の終焉

散布図を見ると、インディーゲーム（緑）は3,000円以下の低価格帯に密集しながら、満足度90%前後の高い水準を維持していることがわかる。

これは、大規模な開発費をかけたメジャータイトル（青）が抱える「高価格ゆえの厳しい評価」とは対照的であり、現代のユーザーが『価格以上の体験価値』をインディーゲームに見出している証左である。

\n `\n )}\n

\n\n

\n\n ${renderGameIntro(\n 1794680,\n \"Vampire Survivors (¥499)\",\n \"迫りくる数千のモンスターをなぎ倒しながら30分間生き残る、究極の「弾幕サバイバル」ゲーム。中毒性の高い育成要素と、ワンコインで買える手軽さが爆発的ヒットを記録した。\",\n 0,\n 50\n )}\n\n ${renderGameIntro(\n 367520,\n \"Hollow Knight (¥1,480)\",\n \"滅びゆくムシたちの王国を探索する2D探索型アクション。圧倒的なビジュアルと音楽、メジャータイトルに引けを取らない膨大なボリュームが、低価格ながらも極めて高い満足度を支えている。\",\n 350,\n 100\n )}\n\n ${renderGameIntro(\n 2561290,\n \"Lethal Company (¥1,200)\",\n \"廃墟となった惑星でスクラップを回収する協力型ホラー。ボイスチャットを活かした独特のゲーム体験がSNSで話題となり、2023年末から2024年にかけて記録的なヒットを飛ばした。\",\n 700,\n 50\n )}\n\n

\n\n ${renderBalloon(\"分析：多様性が生んだ『独占市場』\", -40, -45)}\n\n

\n ${chart_genre_dominance}\n

\n\n

\n ${renderFrame(\n \"ニッチジャンルを攻める\",\n htl.html`\n

『多品種少量生産』

HorrorやRoguelikeといったニッチジャンルでは、リリースのほぼ100%をインディーが占めている。

大手メーカーがリスク回避のために避ける「尖ったジャンル」を無数の個人開発者が埋めることで、市場の多様性が保たれている。

\n \n `\n )}\n

\n\n

\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":436,"value":"$33","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":449,"value":"md`### 調査手法とデータの再現性\n本レポートの分析には、Steam APIおよびVG Insightsから抽出したデータセットを使用しました。\n1. **データ収集：** 2006年から2025年までの全ゲームリリースデータを取得。\n2. **クリーニング：** VGIの定義に基づき、大手メーカー以外の作品を「Indie」、その中で実績解除目的の超小規模作品を「Limited Games」として分類。\n3. **可視化：** Observable PlotおよびD3.jsを用い、動的なチャートを作成。`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":445,"value":"md`---\n### クレジット\n執筆者：picamoq\n\n**データの出典：**\n* [VG Insights (VGI) - Global Steam Market Report](https://vginsights.com/)\n* [SteamDB - Database for Steam games](https://steamdb.info/)\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":469,"value":"md`---\n### 以下データ処理\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":257,"value":"windowImage = FileAttachment(\"window1.png\").url()","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":424,"value":"chart_genre_dominance = Plot.plot({\n width: 1000,\n marginLeft: 150,\n marginBottom: 50,\n x: {\n label: \"インディー作品の割合 (%) →\",\n domain: [0, 100],\n grid: true,\n labelOffset: 45\n },\n\n y: {\n label: \"ジャンル\",\n domain: [\n \"Horror\",\n \"Roguelike\",\n \"Visual Novel\",\n \"Puzzle\",\n \"Platformer\",\n \"RPG\",\n \"Action\"\n ],\n padding: 0.4\n },\n\n style: {\n fontFamily: \"'DotGothic16', sans-serif\",\n fontSize: \"14px\",\n textShadow: \"0.5px 0 0 currentColor\"\n },\n marks: [\n Plot.barX(\n [\n { genre: \"Horror\", share: 98 },\n { genre: \"Roguelike\", share: 99 },\n { genre: \"Visual Novel\", share: 97 },\n { genre: \"Puzzle\", share: 96 },\n { genre: \"Platformer\", share: 94 },\n { genre: \"RPG\", share: 85 },\n { genre: \"Action\", share: 75 }\n ],\n {\n x: \"share\",\n y: \"genre\",\n fill: \"#4caf50\"\n }\n ),\n Plot.ruleX([0])\n ]\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":259,"value":"balloonImage = FileAttachment(\"balloon@1.png\").url()","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":264,"value":"$34","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":255,"value":"renderGameLink = (appId, width, height, top, left, rotate = 0) => {\n const imgUrl = `https://cdn.cloudflare.steamstatic.com/steam/apps/${appId}/header.jpg`;\n const storeUrl = `https://store.steampowered.com/app/${appId}/`;\n\n return htl.html`\n \n

\n `;\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":290,"value":"renderGameLinkManual = (\n imgUrl,\n storeUrl,\n width,\n height,\n top,\n left,\n rotate = 0\n) => {\n return htl.html`\n \n

\n `;\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":355,"value":"renderBalloon = (titleText, top, left) => {\n return htl.html`\n

\n ${titleText}\n

`;\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":379,"value":"d3 = require(\"d3@7\")","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":45,"value":"$35","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":409,"value":"$36","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":413,"value":"viewof play_trigger = Inputs.button(\n htl.html`▶ PLAY ANIMATION`,\n {\n value: 0,\n reduce: (v) => v + 1, // 押すたびに数字をカウントアップさせる\n style:\n \"border: 3px solid #1a1a1a; background: #fff; box-shadow: 4px 4px 0px #1a1a1a; padding: 10px 20px; cursor: pointer;\"\n }\n)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":48,"value":"chart_release = {\n play_trigger;\n\n const chart = Plot.plot({\n width: 1000,\n marginLeft: 100,\n marginBottom: 60,\n style: {\n fontSize: \"14px\",\n fontFamily: \"'DotGothic16', sans-serif\",\n textShadow: \"0.5px 0 0 currentColor\"\n },\n color: {\n domain: [\"Games\", \"Limited\"],\n range: [\"#2196f3\", \"#4caf50\"] // 青と緑\n },\n marks: [\n Plot.barY(release_trend, {\n x: \"year\",\n y: \"count\",\n fill: \"type\",\n tip: true\n }),\n Plot.ruleY([0])\n ]\n });\n\n d3.select(chart)\n .selectAll(\"rect\")\n .attr(\"transform-origin\", \"bottom\")\n .style(\"transform\", \"scaleY(0)\")\n .transition()\n .duration(1000) // 1秒\n .ease(d3.easeBounceOut)\n .delay((d, i) => i * 2) // 左から順番\n .style(\"transform\", \"scaleY(1)\");\n\n return chart;\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":23,"value":"top50_summary = [\n { year: 2012, indie: 12, major: 38 },\n { year: 2017, indie: 10, major: 40 },\n { year: 2020, indie: 15, major: 35 },\n { year: 2021, indie: 10, major: 40 },\n { year: 2022, indie: 13, major: 37 },\n { year: 2023, indie: 18, major: 32 },\n { year: 2024, indie: 15, major: 35 },\n { year: 2025, indie: 17, major: 33 }\n].flatMap((d) => [\n { year: d.year, type: \"Indie\", count: d.indie },\n { year: d.year, type: \"Major\", count: d.major }\n])","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":53,"value":"$37","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W38","stdlib":"1"}} 30:"$2f:body"