The RoboDoom moddb page has been reactivated and the project is seeing more activity now that summer's here. I've added some screenshots and a bit more info on what's going on.
Right now, I'm working toward finishing a multiplayer beta map that will illustrate some of the features that will be in the final version of the game. Hopefully, I'll have this done by the end of next week. There will be unfinished issues/mistakes in the demo, but it will at least give you a good idea of the atmosphere of the final version.
Though this is a Doom mod, material from the original Doom game, (the IWAD), from your original installation will not be required to play. Comments and constructive criticism are welcome.