Recommended games:
Cosmo Fortress
Take a classic vertical-shooter with such games as castle vs castle and get this strategy game. Here, player have space fortress. Build heros, towers, launch asteroids, upgrade parameters of base and heros to destroy base of enemies.
ExcavatorBall
Excavators volleyball: Hit the ball with the bucket, and don't let ball to fall on your side.
Angry Aliens: Physiology
Angry aliens are invading earth! Shoot the invaders while teaching them a thing or two about physiology! Your knowledge and shooting skills just might save the world!
Metropol Skater
Discover on the skateboard the cities of this world, softy to the obstacles from and gather the luck bringers!
Zombie Jump
Help zombies to get as high as possible. Collect brains. Dodge axes and saws.
Super Mario Rampage
Super Mario has had enough of headbutting blocks and foolishly jumping on enemies. Now, Mario has a shotgun! Take out the enemies and former foes as you terrorize the set with your shotgun-in-hand. Up and down controls the gun, whilst space shoots it.