--- title: Building Pufferfish: The Absurd Tech Demo That Turns Devs I… description: Software Mansion built Pufferfish, a conference tech demo where players use their phone cameras to control fish via lip movements in a shared real-time... canonical: https://daily.dev/posts/building-pufferfish-the-absurd-tech-demo-that-turns-devs-i--gbgk7jdjz twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Building Pufferfish: The Absurd Tech Demo That Turns Devs I… | daily.dev og:description: Software Mansion built Pufferfish, a conference tech demo where players use their phone cameras to control fish via lip movements in a shared real-time... og:url: https://daily.dev/posts/building-pufferfish-the-absurd-tech-demo-that-turns-devs-i--gbgk7jdjz og:image: https://api.daily.dev/og/posts/gbgk7JdJz.png og:image:alt: Building Pufferfish: The Absurd Tech Demo That Turns Devs I… 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. # Building Pufferfish: The Absurd Tech Demo That Turns Devs I… **[Software Mansion](https://daily.dev/sources/swmansion)** · 6 min read · 0 upvotes · 0 comments ## Summary Software Mansion built Pufferfish, a conference tech demo where players use their phone cameras to control fish via lip movements in a shared real-time aquarium. The project showcases three in-house tools: Fishjam (low-latency video distribution via WebRTC), Smelter (real-time multi-stream video composition), and TypeGPU (a TypeScript library for writing GPU shaders). The demo was shown at Demuxed London to illustrate how these tools work together for interactive, low-latency video applications. TypeGPU lets developers write shader code in TypeScript using a 'use gpu' directive, avoiding GLSL/HLSL context-switching. The post argues that memorable, absurd demos are more effective at showcasing serious technology than dry proof-of-concepts. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Creator of Ryukin Goldfish Sim Showed New Setup Featuring Jellyfish](https://daily.dev/posts/creator-of-ryukin-goldfish-sim-showed-new-setup-featuring-jellyfish-g6hsst5qd) · 80 LEVEL · 1 upvotes · 0 comments - [How Indie Puzzle Game About Little Fish Evolved Over 8 Months](https://daily.dev/posts/how-indie-puzzle-game-about-little-fish-evolved-over-8-months-2zztnw3dr) · 80 LEVEL · 3 upvotes · 0 comments - [Check Out This Unity Game Prototype Where You Play as a Cute Fish](https://daily.dev/posts/check-out-this-unity-game-prototype-where-you-play-as-a-cute-fish-pt6gumtvs) · 80 LEVEL · 0 upvotes · 0 comments --- Tags: [#typescript](https://daily.dev/tags/typescript), [#webrtc](https://daily.dev/tags/webrtc), [#webgpu](https://daily.dev/tags/webgpu) [View this post on daily.dev](https://daily.dev/posts/building-pufferfish-the-absurd-tech-demo-that-turns-devs-i--gbgk7jdjz) ```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":"Building Pufferfish: The Absurd Tech Demo That Turns Devs I…","url":"https://daily.dev/posts/building-pufferfish-the-absurd-tech-demo-that-turns-devs-i--gbgk7jdjz","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/building-pufferfish-the-absurd-tech-demo-that-turns-devs-i--gbgk7jdjz"},"datePublished":"2026-08-02T07:15:53.482Z","dateModified":"2026-08-02T07:41:42.801Z","description":"Software Mansion built Pufferfish, a conference tech demo where players use their phone cameras to control fish via lip movements in a shared real-time...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/b0bbe35956dee3d80314a885f3447d7a?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/b0bbe35956dee3d80314a885f3447d7a?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Software Mansion","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":"Software Mansion","logo":"https://media.daily.dev/image/upload/s--sOx0vaVZ--/f_auto,q_auto/v1785654908/logos/swmansion?_a=BAMAMicg0","url":"https://daily.dev/sources/swmansion"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/building-pufferfish-the-absurd-tech-demo-that-turns-devs-i--gbgk7jdjz","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"typescript,webrtc,webgpu","timeRequired":"PT6M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Software Mansion","item":"https://daily.dev/sources/swmansion"},{"@type":"ListItem","position":3,"name":"Building Pufferfish: The Absurd Tech Demo That Turns Devs I…"}]} ```