Zombie Apocalypse: Left 4 Dead - Who doesn't love guns and cartoon gore !?! Zombie Apocalypse: Left 4 dead is a great top-down shooter with over 25 weapons and 50 levels. It has everything you love about survival shooters.
Starcom - An epic space action-adventure game with beautiful visual effects. Defend the galaxy against an encroaching enemy invasion force with an increasingly powerful array of weapons and upgrades.
Super Soldier - An arcade style shooter where you can even enter vehicles like tanks or helicopters. Shoot the orange enemies with your bubbles. A game in Dan Paladin's art style.
Pixel - Pixel is an absourtract shooter, control your ship with the arrowkeys and shoot your way through hordes of dangerous shapes.
Soldier - A remake of the classic 1985 shoot-em-up Commando. Fight against terrorists in Chechnya, then stop the North Koreans from developing the nuke and finally find the secret base of the Iraqi insurgents.
Borderlands Tribute - Play Through the first levels of the upcoming gearbox game Borderlands in this fan made sidescrolling shooter.
Small Arms War - A shooter with very simple graphics but nice gameplay. Run your stickman through the levels while using any of your five weapons to shoot the approaching enemies, be careful with your ammo though!
Adrenaline - Go bullet crazy as you blast your way through tons of enemies! A classic shooter with great effects that reminds of Geometry Wars.
Penguinz - Unrivaled penguin gore mayhem in this action packed shooter. 15 enemies and 4 bosses. 9 weapons with 33 upgrades and 6 special upgrades.
Sandcastle - A fun mix of strategy and shooting in this medieval defense game. Defend your city from the invading ships, use different types of ammo and hit them!