This repository collects the source code to various early DOS raycaster shoot-'em ups which have been since been released under open source licenses.
| Game | Developer | Published | License |
|---|---|---|---|
| Hovertank 3D | id Software / Softdisk | April 1991 | GPL2 |
| Catacomb 3D | id Software / Softdisk | November 1991 | GPL2 |
| Catacomb Abyss | id Software / Softdisk | GPL2 | |
| Catacomb Armageddon | id Software / Softdisk | GPL2 | |
| Catacomb Apocalypse | id Software / Softdisk | GPL2 | |
| Blake Stone: Planet Strike | JAM Productions / Apogee | October 1994 | GPL2 |
| Rise of the Triad | Apogee | December 1994 | GPL2 |
Note: Wolfenstein 3D is not included in this repository because the original DOS source code has not been released under a true open source license.