Remember, the movie Heat? well this is almost it except with clown masks. The amount of bullets you fire is unreal. Obviously it's not very fun to play solo but with friends it sure deserves to be played through. Graphics are mediocre so even older PC can definately run it. Unfortunately it only has 6 missions which are about 20 minutes long maximum. Though the gameplay seems very repetetive, every now and then you will just have to face the swat assault and just keep on moving. There is also difficulty levels, what make the game a lot harder but the main problem is that you will run out of ammo.
Anyway get some friends and do some heists.