This game comes from a user named torick who got his hands on a release candidate cd and ripped it himself. The description from his video below states that this build is from May 2000. He says:
It's a release candidate which means the game is pretty much complete. It can be beat to the ending credits as far as I know.
No install necessary, simply unpack contents to a directory of your choice and run OverDraw.exe. There appears to be several gamemodes including Campaign, Instant Action, and even Multiplayer, but I've only tested Campaign so far...One thing I do know is it does NOT like to be alt-tabbed out.
Here's a video torick uploaded showing gameplay...much thanks to him for releasing this little gem.
(beware the shitty music)
Oh yeah, doesn't appear to be a help file, and in game text can be lacking or buggy, but I know that 0-9 equips your wep, I have no idea how to put the wep away, wasd and space move and jump, Q brings up your inventory, K brings up the map, + and - zoom in and out of map, right click to zoom for sniper rifle.
If you feel like it, feel free to throw me a THANKS.