ZRift is a mod aiming to attempt to at least partially recreate Chasm: The Rift inside GZDoom engine, as improved, re-imagined version. Current mod version: 1.1.2
Zrift Chasm in Doom - Legacy Edition v0.5h Zrift mod by Pandut & HAL9000, This is Tribalquake' edited version of the older 0.5a release.