Open source Role playing games for MAC OS X

PlaneShift

PlaneShift is a Role Playing Game immersed into a 3D virtual fantasy world which is fully free to play. (GPL)

Linux - FreeBSD - Windows - MAC OS X

Veloren

Veloren is a multiplayer voxel RPG written in Rust. It is inspired by games such as Cube World, Legend of Zelda: Breath of the Wild, Dwarf Fortress and Minecraft (GPL)

Linux - Windows - MAC OS X

WorldForge

The WorldForge project is producing an open source framework for massively multiplayer online role-playing games. (GPL)

Cross-platform

3 applications