I played it three or four years ago, but I could tell that it was older than that, the graphics were pretty bad. In the standard game, there was a red team and a blue team. As I recall, there was only a two or three different weapons, and also a grenade. It was a first person shooter.

The two levels that I remember were a dodgeball type level, and the marquee paintball level. The dodgeball one took place in a big square room with pillars, made of completely wood. If you got shot, you respawned behind the enemies side to watch the rest of the game. If you got hit once, you were dead until an entire team died. I'm pretty sure in the very center of the map there was a really good power gun.

The other level had a couple bunkers on each side, with a bridge and a river running under it in the middle. This is where most of the game we played took place.

The administration got really mad that we were playing it all the time, so they banned it, and I lost the link to the download a long time ago. I'm really itching to play this again, thanks for the help!