Pixelosity is the simplest indie game/shmup that I have ever played. Being the in-depth reviewer that I am it kind of presented a problem, and as a result this will likely be the shortest review I will do ...
Pixelostiy is a simple 1, or 2 player sidescrolling shmup that was developed by 'GLHF Games'. You pilot a ship (that is constructed of simple pixel blocks) as it flys along with a rainbow trailing behind it (kind of like Nyan Cat ^.^). Your goal is to try to shoot down other ships, and get the highest score in the process of doing so. You can accumulate chains (multiple enemies killed without getting hit) that add to your ever-growing score. As you fly through the game your score will gradually rise along with the additional points that you get for destroying ships in your path. Like any shmup you can find power-ups from the fallen enemies/ships that will aid you in your progress. I've actually only found a few of them though. The power-ups I did find included bullet overdrive (rapid fire), double bullets (shoots a wide spray of shots), and a bomb (clears the screen of enemy ships). You have a limited amount of lives in 'Pixelosity', so using power-ups to your advantage will definitely help out.
