Definitely one of the least known, but greatest games.
There are several different arenas to choose from and a good sized arsenal of upgradeable paintball guns. The player must purchase paintballs, C02, and paint grenades to use in combat with the AI team. Some of the guns have scopes that you can snipe with, with realistic physics. The paintballs drop and lose accuracy just like a real paintball gun, with the more expensive guns being more accurate and having a longer range. The game's graphics and sound don't reflect the cheap price. Although the graphics aren't amazing by today's standards, for the time period it was released in they are nice. The sound effects are portrayed very well, all the guns and splatter effects add a realistic feel to the game.
If you are looking for a good bargain priced shooter game that isn't completely full of violence and gore (we all need a break some time), this is a good game for you.