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- OpenArcanum for Arcanum: Of Steamworks and Magick Obscura
- openc2e for the Creatures series of games
- OpenDarkEngine for the Thief series of games
- OpenGTA for Grand Theft Auto
- OpenJazz for Jazz Jackrabbit
- OpenMoHAA for Medal of Honor Allied Assault
- OpenMOO2 for Master of Orion II: Battle at Antares
- OpenSkyscraper for SimTower
- OpenMW for Morrowind
- OpenRA for Command & Conquer: Red Alert, Tiberian Dawn and Dune 2000
- openRaider an open source Tomb Raider clone
- OpenRedAlert for Command & Conquer: Red Alert, based on FreeCNC and FreeRA
- OpenTH for Theme Hospital
- OpenTTD for Transport Tycoon Deluxe
- OpenTyrian for Tyrian
- OpenXcom for UFO: Enemy Unknown
- OpenIG for Imperium Galactica in Java
Read more about this topic: Game Engine Recreation