Try to get the red ball to the level end. Simple idea, but fun little game with nicely drawn and planned levels.
Here is a different type of Defense game. Build and upgrade your guns to stay alive.
Can you get the ring down the red wire? This is hard!
Try to get the red balls over the spikes.
Use your weapons to push away the threat. Really Fun Game.
A game of skill. Can you separate out red from blue?