Not so long ago Rebel-CD32 brought up the idea of a Catacomb 3-D port for the Amiga. I hacked together a quick port based on Reflection Keen, which is a merge of the Keen Dreams and Catacomb 3-D engines. As expected it runs very slow due to the per-pixel updates and lots of function calls. I’m looking for someone with experience, who could rewrite the original optimized scaling and drawing routines in 68k assembler.
Some videos of the game running in WinUAE (not cycle-exact :)):
https://youtu.be/sXc5JdpUyLw
https://youtu.be/WxdkyQKLpJI
The source code on Github:
https://github.com/BSzili/refkeen/tree/amiga
Patches and pull requests are welcome!