BaBlah BottleShooter has you shoot up a gazillion bottles and the occasional soda can for points and coins before you run out of ammo or hit a bad bottle!
You always get points for landing shots, but you get coins if you can maintain a streak (it'll be clear as day when you are in one). Use coins to buy new and better guns, which sport more ammo or fewer hits to trigger a streak!
The game also sports a difficulty curve where the bottles and cans will speed up as you score more points, and the soda cans get harder to shoot down.
Keep at it, pardner, and you'll probably become the Blahest Gun in the West.