- 2048 (JavaScript, Java, MIT, mature)
- 2Moons Browsergame Engine (PHP, JavaScript, MIT, mature)
- 3d.city (JavaScript, GPL-3.0, mature, inactive since 2016)
- Achtung, die Kurve! (JavaScript, AGPL-3.0, mature)
- Ajax3d (JavaScript, GPL-2.0, beta, inactive since 2007)
- Alien Assault Traders (PHP, GPL-2.0, beta, inactive since 2009)
- Allure of the Stars (Haskell, AGPL-3.0, beta)
- Ancient Beast (JavaScript, AGPL-3.0, mature)
- aquastax (JavaScript, MIT, beta)
- Arashi-JS (JavaScript, GPL-2.0, beta, inactive since 2010)
- Armor Alley (JavaScript, CC-BY-NC-3.0, beta)
- asdf (JavaScript, MIT, mature)
- Backbone Game Engine (JavaScript, MIT, beta, inactive since 2016)
- Ball And Wall (JavaScript, MIT, mature, inactive since 2015)
- Banania (JavaScript, MIT, mature)
- Bemuse (JavaScript, TypeScript, AGPL-3.0, mature)
- Betrayer's Moon Tactics (JavaScript, GPL-2.0, beta, inactive since 2006)
- BlackNova Traders (PHP, JavaScript, GPL-2.0, beta, inactive since 2012)
- BlakedAwesomenaughts (JavaScript, PHP, MIT, beta, inactive since 2015)
- boardgame.io (JavaScript, TypeScript, MIT, beta)
- Bobby (TypeScript, AGPL-3.0, mature)
- Boohu (Go, ISC, beta)
- British Bingo (JavaScript, GPL-3.0, mature)
- BrowserQuest (JavaScript, MPL-2.0, mature)
- Candy Box 2 (TypeScript, JavaScript, GPL-3.0, mature, inactive since 2013)
- canvas-tetris (JavaScript, MIT, mature, inactive since 2018)
- Card Stories (JavaScript, Python, AGPL-3.0, beta, inactive since 2012)
- Castle of the Winds in Elm (Elm, JavaScript, MIT, beta)
- Castle of the Winds (JavaScript, MIT, beta, inactive since 2016)
- Cattle Bity (TypeScript, MIT, mature)
- CaveExpress (C, JavaScript, GPL-3.0, mature)
- cc94 (C++, Python, AGPL-3.0, beta)
- Chess3D (JavaScript, Python, GPL-3.0, mature, inactive since 2016)
- Children of Ur (Dart, JavaScript, MIT, beta)
- Chroma (C, GPL-2.0, mature)
- Clumsy Bird (JavaScript, MIT, mature, inactive since 2017)
- CommandoJS (JavaScript, CoffeeScript, MIT, beta, inactive since 2012)
- Consomaton (TypeScript, MIT, mature, inactive since 2016)
- CrappyBird (JavaScript, MIT, mature, inactive since 2017)
- Cross The Road (Elm, JavaScript, AGPL-3.0, mature)
- CrystalQuest (JavaScript, MIT, mature, inactive since 2017)
- Dark Destiny (Java, JavaScript, ?, mature, inactive since 2016)
- DarkCity (PHP, GPL-3.0, mature, inactive since 2012)
- Dedalus (JavaScript, GPL-2.0, beta, inactive since 2018)
- Delaford (JavaScript, PHP, MIT, beta)
- Devana (PHP, zlib, beta)
- diablo-js (Java, JavaScript, MIT, mature)
- Duck Hunt JS (JavaScript, MIT, mature)
- Enduro tribute (JavaScript, MIT, mature)
- EPOH (JavaScript, MIT, beta)
- Esenthel Engine (C, C++, Custom, beta)
- Evil Cult (Haxe, JavaScript, GPL-3.0, mature)
- Executive Man (JavaScript, Custom, mature, inactive since 2017)
- Exolon (JavaScript, MIT, mature)
- F.LF (JavaScript, CC-BY-NC-SA-3.0, mature)
- Fantasy Map Generator (JavaScript, MIT, mature)
- Faur (C, Python, C++, GPL-3.0, beta)
- flixel-gdx (Java, 3-clause BSD, beta, inactive since 2017)
- Floppy Birb (JavaScript, MIT, mature)
- Fluid Table Tennis (JavaScript, MIT, mature, inactive since 2013)
- Freeciv-web (JavaScript, Java, Python, AGPL-3.0, mature)
- Gift Grabber (JavaScript, Apache-2.0, mature)
- gist-txt (JavaScript, MIT, mature, inactive since 2018)
- GNU FreeDink (C, GPL-3.0, mature, inactive since 2012)
- Grimsonland (JavaScript, TypeScript, MIT, mature, inactive since 2017)
- Harmonist: Dayoriah Clan Infiltration (Go, ISC, beta)
- HaxePunk (Haxe, MIT, mature)
- Heroine Dusk (JavaScript, GPL-3.0, mature, inactive since 2017)
- HexGL (JavaScript, CoffeeScript, MIT, mature, inactive since 2016)
- Hextris (JavaScript, GPL-3.0, mature)
- Hexwar (Ruby, JavaScript, MIT, beta, inactive since 2012)
- HTML5 Pacman (JavaScript, WTFPL, mature, inactive since 2013)
- Isogenic Game Engine (JavaScript, MIT, mature)
- JavaScript Graphic Adventure Maker (JavaScript, MIT, mature)
- javascript-E.T. (JavaScript, Assembly, MIT, beta, inactive since 2017)
- Jazz² Resurrection (C#, JavaScript, GPL-3.0, mature)
- JiGS Interactive Game System (JavaScript, PHP, GPL-3.0, beta)
- jsFO (JavaScript, Python, Apache-2.0, beta, inactive since 2017)
- Julius (C, C++, AGPL-3.0, mature)
- Kai ‘Opua (JavaScript, MIT, mature, inactive since 2013)
- Kiwi.js (JavaScript, TypeScript, MIT, mature, inactive since 2015)
- LambdaHack (Haskell, 3-clause BSD, beta)
- Land of Fire (Script, PHP, GPL-2.0, beta)
- LBA2 Remake (TypeScript, MIT, beta)
- Lemmings.ts (TypeScript, MIT, mature)
- Librerama (GDScript, GPL-3.0, mature)
- Lords of the Fey (JavaScript, AGPL-3.0, beta, inactive since 2018)
- Lose Your Marbles (JavaScript, MIT, mature, inactive since 2014)
- lttp-phaser (TypeScript, JavaScript, MIT, beta, inactive since 2016)
- melonJS (JavaScript, MIT, mature)
- Metal Mech (PHP, GPL-2.0, beta, inactive since 2006)
- micropolisJS (JavaScript, GPL-3.0, mature)
- Minesweeper.Zone (JavaScript, PHP, MIT, mature)
- Minilens (GDScript, GPL-3.0, mature, inactive since 2018)
- mk.js (JavaScript, MIT, beta)
- Morpheus Web Remake (JavaScript, TypeScript, MIT, beta)
- movbizz (PHP, JavaScript, MIT, beta, inactive since 2015)
- Omega (JavaScript, Ruby, AGPL-3.0, beta)
- One Hour One Life (C, C++, PHP, Public domain, mature)
- Online Chess Club (PHP, JavaScript, GPL-2.0, mature)
- Open Panzer (JavaScript, GPL-2.0, mature)
- Open Soccer Star (PHP, GPL-3.0, beta)
- OpenDominion (PHP, AGPL-3.0, beta)
- OpenEtG (JavaScript, MIT, beta)
- OpenLara (C++, C, 2-clause BSD, mature)
- OpenRoads (TypeScript, JavaScript, MIT, mature, inactive since 2014)
- OpenSC2K (JavaScript, GPL-3.0, beta)
- OpenSoccer (PHP, GPL-3.0, beta)
- OpenWebSoccer-Sim (PHP, LGPL-3.0, mature)
- Orbium (JavaScript, GPL-2.0, mature, inactive since 2018)
- orona (CoffeeScript, GPL-2.0, beta, inactive since 2012)
- ouzel (C, C++, Objective-C, 2-clause BSD, beta)
- pacman-canvas (JavaScript, CC-BY-SA-4.0, mature, inactive since 2018)
- Pendumito (JavaScript, GPL-2.0, mature, inactive since 2003)
- Phaser (JavaScript, MIT, mature)
- phpRPG (PHP, GPL-2.0, beta, inactive since 2006)
- Playir (C++, Apache-2.0, mature, inactive since 2014)
- Prescription Wars (ColdFusion, JavaScript, GPL-3.0, mature, inactive since 2016)
- PrimeShooter (JavaScript, GPL-2.0, mature, inactive since 2010)
- proxx (TypeScript, JavaScript, Apache-2.0, mature)
- QuakeJS (JavaScript, MIT, mature)
- RacerJS (JavaScript, MIT, mature, inactive since 2010)
- raylib (C, C++, C#, zlib, mature)
- Ren'Py (C, Python, Ren'Py, LGPL-2.1, mature)
- ReQbert (JavaScript, GPL-3.0, beta)
- rock-raiders-remake (JavaScript, MIT, beta)
- Roguish (JavaScript, 3-clause BSD, beta, inactive since 2015)
- Rot Magus (JavaScript, Apache-2.0, CC0, beta)
- Runfield (JavaScript, GPL-3.0, mature, inactive since 2011)
- sandspiel (Rust, JavaScript, TypeScript, MIT, beta)
- sensitive-js (JavaScript, Custom, beta, inactive since 2017)
- shadow-of-the-beast-html5 (JavaScript, Apache-2.0, beta, inactive since 2017)
- Skifree-HTML5-clone (JavaScript, GPL-3.0, beta, inactive since 2011)
- skifree.js (JavaScript, MIT, mature, inactive since 2016)
- Skrupel - Tribute Compilation (PHP, JavaScript, GPL-2.0, mature, inactive since 2011)
- Smash (JavaScript, MIT, mature)
- Smolpxl (JavaScript, AGPL-3.0, mature)
- Sokoban (CoffeeScript, AGPL-3.0, mature)
- Solar2D (C++, MIT, mature)
- Sootl (Elm, JavaScript, GPL-2.0, beta, inactive since 2016)
- SpaceCadetPinball (C++, MIT, mature)
- Squiffy (JavaScript, MIT, mature)
- StarMines: The Next Generation (Scala, GPL-3.0, mature)
- Supaxl (JavaScript, MIT, mature)
- Super Tilt Bro (Assembly, Python, WTFPL, mature)
- Superpowers (TypeScript, ISC, mature)
- Survivor (JavaScript, CC-BY-NC-3.0, mature)
- Taggem (JavaScript, AGPL-3.0, beta, inactive since 2014)
- Taisei Project (C, Python, MIT, mature)
- The House (JavaScript, MIT, mature, inactive since 2019)
- The Mana World (C++, Script, GPL-2.0, mature)
- Twine (JavaScript, TypeScript, GPL-3.0, mature)
- Undum (JavaScript, MIT, mature, inactive since 2018)
- WallBall (Haxe, JavaScript, GPL-3.0, mature)
- WebChess (PHP, GPL-3.0, mature, inactive since 2010)
- WebFun (TypeScript, MIT, beta)
- WebHangman (JavaScript, GPL-2.0, mature, inactive since 2003)
- WebQuake (JavaScript, GPL-2.0, mature, inactive since 2019)
- World of Phaos (PHP, GPL-2.0, mature, inactive since 2011)
- WWW (JavaScript, GPL-3.0, beta, inactive since 2014)
- Xultris (JavaScript, XUL, MPL-1.1, mature, inactive since 2011)
- Zetawar (Clojure, MIT, mature)