ViridianGames/U7Revisited

Exult is a project to recreate Ultima 7 for modern operating systems, using the game's original plot, data, and graphics files.

openblack is an open-source game engine that supports playing Black & White (2001).

Open reimplementation of Might and Magic 6 7 8 game engine

Open-source re-implementation of The Elder Scrolls: Arena.

OpenMW is an open-source open-world RPG game engine that supports playing Morrowind. Main repo and issue tracker can be found here: https://gitlab.com/OpenMW/openmw/

Open source recreation of Daggerfall in the Unity engine

Improved version of the X-Ray Engine, the game engine used in the world-famous S.T.A.L.K.E.R. game series by GSC Game World. Join OpenXRay! ;)

Opensource rebuild of the XCOM Apocalypse Engine that requires the original files to run.

A faithful and open-source remake of Cave Story's engine written in Rust