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- FreeCNC for Command & Conquer and Command & Conquer: Red Alert
- FreeRCT for Roller Coaster Tycoon and Roller Coaster Tycoon 2
- Free Heroes II Engine for Heroes of Might and Magic II
- Free in the Dark for Alone in the Dark
- Freenukum for Duke Nukem
- FreePrince for Prince of Persia
- FreeRA for Command & Conquer: Red Alert, based on FreeCNC
- FreeSCI for Sierra adventure games using the SCI engine; FreeSCI has now been merged with the ScummVM project
- FreeSynd for Syndicate
- Frontier 1337 for Elite 2 - Frontier (PSP Port based on GLFrontier)
- Frotz, ZIP, JZIP, Zip 2000, Zip Infinity, and Nitfol for Infocom's Z-machine text adventure games
Read more about this topic: Game Engine Recreation