Though based to a small degree on the Linux Doom source code, the game engine is heavily simplified and customized, and is largely written in 6502 assembly code. The end result is a game closer to Wolfenstein 3D in terms of technology, albeit capable of rendering arbitrarily angled walls, with an engine still based on sectors rather than fixed grid cells.
Simplified versions of Doom's shareware resources in formats that can be dealt with by the VIC are baked into the executable file as objects. This includes support for the soundtrack and converted versions of the PC speaker sound effects.
Eight of the nine levels of Knee-Deep in the Dead are provided, in a simplified format. Many superfluous areas are removed to fit the levels into system memory constraints, and all height differences are removed as the game engine is not capable of dealing with them.
- E1M1: Hangar
- E1M2: Nuclear Plant
- E1M3: Toxin Refinery
- E1M4: Command Control
- E1M5: Phobos Lab
- E1M6: Central Processing
- E1M7: Computer Station
- E1M8: Phobos Anomaly
All shareware weapons are implemented except for the rocket launcher.
- Official git repository
- Original announcement at VIC-20 Denial Forums.
- Review and instructions on how to play.
- Video of gameplay at YouTube.
|Source code genealogy|
|Based on||Name||Base for|
|Linux Doom v1.10||vicdoom||None|