Game engine recreations are engine interpreters for video games that replace the original engine binary that came with the original game. Game engine recreations are primarily made to allow support for the game on other operating systems. In many cases, these are made by reverse engineering the original executable, but occasionally, as was the case with some of the engines in ScummVM, the original developers have helped the projects by supplying the original source code—those are so called source ports.
- Sarien, NAGI, MEKA, DAGII, and JAGI for Sierra adventure games using the AGI engine. Sarien project assimilated by ScummVM.
- SCSharp for StarCraft
- ScummVM is a collection of engines for a multitude of adventure games, including AGI, Cinématique, Gob, Groovie, Kyra, MADE, M4, Parallaction, SCI, SCUMM and others, in addition to a few source ports.
- Sing, a GoldSrc-compatible (Half-Life 1) game engine
- Spectalum for Eye of the Beholder II
- Spring for Total Annihilation and its many mods
- StarGus with Stratagus for StarCraft
- REWiki - A centralized reverse-engineering documentation project