Glitch
Glitch (Web/Flash, 2009) has an official source code release.
Data checked 2026-10-12 · unbaked registry
Projects
Glitch
Source release
Wikipedia: open engine AND open game data; source released 2013 by/for Tinyspeck. In 2013, one year after the MMO was shut down, most of the artwork and parts of the code were released under the CC0 license.
What you need
Check each project for what game data it needs. Code here is linked, never game files.
More on Web/Flash
GameMethodYearStarsLast push
WEB2048Source releaseReimplementation+1201413k2026-08-19WEBBrowserQuestSource release20129.4k2023-07-14WEBA Dark RoomSource release20138.3k2025-05-23WEBshapezSource release20207.0k2026-09-07WEBPokémon ShowdownReimplementationNative port+120116.0k2026-10-12WEBUntrustedSource release20144.7k2025-05-31WEBFriday Night Funkin'Source releaseReadable bytecode20203.8k2026-10-11WEBOpenFront.ioSource releaseAgent environment20242.8k2026-10-12Found via en.wikipedia.org/wiki/List_of_commercial_video_g, glitchthegame.com/public-domain-game-art/, pcworld.com/article/2064273/afterlife-of-an-mmo-
GitHub data checked 2026-10-12. Notes are summaries from the research pass; the project pages are the authority.