- AdaVenture (Ada, GPL-3.0, mature)
- adventure engine (Lua, MIT, mature, inactive since 2013)
- Bladecoder Adventure Engine (Java, Apache-2.0, mature)
- BrowserQuest (JavaScript, MPL-2.0, mature)
- Captain Blood (C++, C, GPL-3.0, mature)
- Cat Mother Dead Justice (C++, 3-clause BSD, GPL-2.0, beta, inactive since 2003)
- Childsplay (Python, GPL-3.0, mature)
- Colossal Cave Adventure (Python, Apache-2.0, mature)
- Dedalus (JavaScript, GPL-2.0, beta, inactive since 2018)
- Deer Portal (C++, zlib, beta)
- Der Clou! (C, Custom, beta, inactive since 2017)
- Digital: A Love Story (Ren'Py, Python, CC-BY-NC-SA-3.0, mature)
- Dragon History - Dračí Historie (Pascal, Script, Pascal, Assembly, GPL-2.0, mature, inactive since 2010)
- Dunnet (Emacs Lisp, GPL-3.0, mature, inactive since 1992)
- eAdventure (Java, C#, GPL-3.0, mature, inactive since 2014)
- engge (C++, MIT, beta)
- Escape Towards The Unknown (C, GPL-2.0, beta, inactive since 2016)
- Fanwor (C, GPL-2.0, mature)
- fRaBs (Lisp, C++, C, Public domain, mature, inactive since 2016)
- Free in the Dark (engine) (C, C++, GPL-2.0, beta)
- GameLV (C++, GPL-2.0, beta)
- gist-txt (JavaScript, MIT, mature, inactive since 2018)
- GNU FreeDink (C, GPL-3.0, mature, inactive since 2012)
- Grail (C++, Lua, GPL-3.0, beta, inactive since 2013)
- Gravitation (C++, Public domain, mature, inactive since 2008)
- Head over Heels (C++, GPL-3.0, mature)
- Heart of the Alien (C, GPL-2.0, beta, inactive since 2005)
- Hypatia (Python, MIT, beta, inactive since 2016)
- INSTEAD (C, Lua, Java, MIT, mature)
- JavaScript Graphic Adventure Maker (JavaScript, MIT, mature)
- javascript-E.T. (JavaScript, Assembly, MIT, beta, inactive since 2017)
- Kroz (Pascal, GPL-2.0, mature, inactive since 1990)
- L'Abbaye des Morts (C, GPL-3.0, mature, inactive since 2018)
- LBA2 Remake (TypeScript, MIT, beta)
- Little Big Adventure 1 - Engine source code (Assembly, C, GPL-2.0, beta)
- Little Big Adventure 2 - Engine source code (Assembly, C++, GPL-2.0, beta)
- Morpheus Web Remake (JavaScript, TypeScript, MIT, beta)
- Murder In The Public Domain (C++, GPL-3.0, mature, inactive since 2013)
- MUSoSu (Java, GPL-3.0, beta, inactive since 2008)
- OREGON 77 (Fortran, ISC, mature)
- Privateer - Gemini Gold (C++, GPL-2.0, mature, inactive since 2012)
- Reconstruction of Super ZZT (Pascal, MIT, mature)
- Reconstruction of ZZT (Pascal, MIT, mature)
- ResidualVM (C++, GPL-2.0, beta)
- RuZZT (Rust, MIT, beta)
- Sentient Storage (Python, Public domain, mature)
- Serious Engine (C, C++, GPL-2.0, mature, inactive since 2017)
- Serious Sam Android (C, C++, GPL-2.0, mature, inactive since 2020)
- Ship of Harkinian (C, C++, MIT, mature)
- Sintel The Game (Python, MIT, beta, inactive since 2014)
- Sludge (C, C++, Objective-C, LGPL-2.1, mature)
- Spice Trade (Java, LGPL-2.1, mature, inactive since 2005)
- Star Maiden Astraea Rio (Ren'Py, MIT, mature)
- star-control2 (C, C++, MIT, mature)
- terrarium (C++, Script, GPL-2.0, beta)
- The House (JavaScript, MIT, mature, inactive since 2019)
- twin-e (C, GPL-2.0, beta, inactive since 2015)
- TwinEngine (C, GPL-2.0, mature, inactive since 2015)
- Tyger (Python, ?, beta, inactive since 2016)
- UchuServer (C#, AGPL-3.0, mature)
- uninvited (C, C++, Artistic License-2.0, beta, inactive since 2016)
- unitystation (C#, AGPL-3.0, beta)
- Vegan on a Desert Island (Lua, GPL-3.0, beta)
- WebFun (TypeScript, MIT, beta)
- zorkClone (Java, Apache-2.0, beta)