Unreal is a first-person shooter developed by Epic MegaGames and Digital Extremes and published by GT Interactive in 1998. You take the role of a prisoner who was aboard the prison spacecraft Vortex Rikers. On the way to a prison moon, it crashed on a foreign planet.
In this video, you can see the playable shareware version. Unfortunately, it didn’t come with OpenGL or Direct3D support, so I had to go with the software renderer. Turning on all the fancy stuff, it looks quite well, though.