If you like to be constantly blown up - even on the Easy difficulty - with no (apparent) reason, this is the game for you. Apart from this, and the frustration to be shot at from enemies you just cannot see (because of the horrendously pixelated foliage / environment), this game can be moderately fun. But it's anyway worse than other games using the same Build Engine, so you better spend your money and time playing those: Duke Nukem 3D, Shadow Warrior, etc.