Scorched Earth - It's a very awesome 3D game similar to Worms or Gunbound. You have your vehicle and you try to shoot at and destroy the other vehicle with various types of ammunition. As you shoot, the environment gets eroded away with each shot. I highly recommend it.
Missile Matador - Very unique game, for me at least. You start each level at a specific point and around you are various amounts of missiles aimed at you. You have to dodge them as soon as it starts and get them to blow up by hitting each other other the ground.
Solace - It's a beautiful shooter, similar to Galaga or any game like it. Only instead of being about the killing, it's sort of about the music. As you shoot, you create a tone and killing the enemies creates a tone as well. It's a very good game that I suggest you look into and play.
Toblo - THis is a fun capture-the-flag style game crossed over with Minecraft(sort of). You are thrust into a world made of blocks against a number of other teams and you have to capture their main block. You can take everything(except the ground) apart and use it as ammunition to fire at the opponent. When you, or they, get hit, they are transported back to their own base and given a small respawn time. It's a really fun game.
N - THis is a rather addicting game full of levels. You are a ninja with great speed and dexterity and must navigate a level with things out to kill you. You have to activate a series of switches while staying alive, while also collecting these yellow squares to keep your time from going out. The levels start out pretty easy but get very hard, very fast.
