The game is called .kkrieger, it's currently only in the beta stage of development, but is playable.
How big is this game? 96KB
. Using the same [censored] compression and on-the-fly texture and sound generation as prior releases.
The games going to be 128KB when it's finished, which will take less than a second to download on standard high-speed.
Download it here: http://www.theprodukkt.com./
Oh, the game relies heavily on pixel shaders 1.3, so odds are you'll need a geforce 4ti or better, or on the ATI end, a radeon 8500 or better.