Yeah, OverDose is a totally free indie title for PC. We spent a good few years being just one coder and one artist, but now we have another artist at last, thank god.
Best way I can describe the game is that its multiplayer, team play objective based. In fact, we took a LOT of inspiration from the original RtCW multiplayer here. Obviously we adde a lot of our own features from modern games, like iron sights etc, plus we have our own movement system which works a lot like Mirrors Edge in that you can climb around, or even have team mates give you boost ups and pull you onto higher ledges. We really wanted to boost the team play idea a bit. Graphics wise, yeah its the Quake TWO engine, id tech 2, but we added per pixel lighting and soft shadows, rim lighting, sub surface scatering, bloom, parallax, ambient occlusion, colour grading and other post processsing... Quite a bit:
http://www.moddb.com/games/overdose
If theres enough interest, I can look into making a more indepth topic on it soon.
The title screen (real time in-engine) and theme song:
http://youtu.be/3pgMmmVvU-o