--- title: A RayCast FPS In COBOL | daily.dev description: A developer built a fully functional raycasting first-person shooter game entirely in COBOL, the business-oriented language. The game outputs each frame as a... canonical: https://daily.dev/posts/a-raycast-fps-in-cobol-kbhnstnac twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: A RayCast FPS In COBOL | daily.dev og:description: A developer built a fully functional raycasting first-person shooter game entirely in COBOL, the business-oriented language. The game outputs each frame as a... og:url: https://daily.dev/posts/a-raycast-fps-in-cobol-kbhnstnac og:image: https://api.daily.dev/og/posts/KBHNsTNac.png og:image:alt: A RayCast FPS In COBOL og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # A RayCast FPS In COBOL **[Hackaday](https://daily.dev/sources/hackaday)** · 2 min read · 0 upvotes · 0 comments ## Summary A developer built a fully functional raycasting first-person shooter game entirely in COBOL, the business-oriented language. The game outputs each frame as a raw bitmap to STDOUT, using ffplay to render visuals, while reading keyboard input via STDIN. It implements Wolfenstein-style raycasting, sprites, enemy AI, and variable-height sectors reminiscent of DOOM. The full project is available on GitHub under an Apache license. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [PhobosLab](https://daily.dev/posts/phoboslab-46ax4iw1k) · Hacker News · 0 upvotes · 0 comments - [AI Strikes Back: Using an LLM to write COBOL](https://daily.dev/posts/ai-strikes-back-using-an-llm-to-write-cobol-6d1aer2nw) · marmelab · 18 upvotes · 1 comments --- Tags: [#game-development](https://daily.dev/tags/game-development) [View this post on daily.dev](https://daily.dev/posts/a-raycast-fps-in-cobol-kbhnstnac) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"A RayCast FPS In COBOL","url":"https://daily.dev/posts/a-raycast-fps-in-cobol-kbhnstnac","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/a-raycast-fps-in-cobol-kbhnstnac"},"datePublished":"2026-06-07T05:22:09.623Z","dateModified":"2026-06-07T05:22:27.809Z","description":"A developer built a fully functional raycasting first-person shooter game entirely in COBOL, the business-oriented language. The game outputs each frame as a...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/1812e23f1557128e01470d172aafdc91?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/1812e23f1557128e01470d172aafdc91?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Hackaday","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Hackaday","logo":"https://media.daily.dev/image/upload/s--JhDfhy70--/f_auto,q_auto/v1767541814/logos/hackaday","url":"https://daily.dev/sources/hackaday"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/a-raycast-fps-in-cobol-kbhnstnac","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"game-development","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Hackaday","item":"https://daily.dev/sources/hackaday"},{"@type":"ListItem","position":3,"name":"A RayCast FPS In COBOL"}]} ```