Does anyone have Suggestions on Game DOWNLOADS ? 10 points says you do!?

i need to download games like RECOIL , any suggestions? websites? its for my brother, he is so fond with recoilheneeds somthing ofthe same kind.......init the tanks can get flexible, flamethrower, bombingtanks, mortar cannons and stuff...... anything else out there? NOT ONLINE GAMES!! WANT TO PLAY OFFLINE