This is not the best game in the world! But..?
Enemies popping up from nowhere 15 yards from your face..
But still, the game is still playable (Sort of). It's not a good game, but playing it over lan in CoOp it's a good way to kill some time.
You can play this game on a low end graphic-card, so put it in your laptop-pc and take it with you on your next business trip. ;)
In the control settings there is a slider for Music, I don't know what that one is doing there, because there is no music in the game. (What I heard, erhm, didn't heard anyway)
There are some nice things in the game, like the upgrade of weapons.
But that's about it. If you find this game for $9, buy it.
If you find it for $10, don't.