A bunch of colourful sprites that were rejected by various videogame projects have banded together to star in their own game, which they've called "Nitty Gritty". Time to fire up that minigun, Nitty!
Z or Space - let 'er rip
Arrows - slip and weave
There are 17 opponent sprites. If one of them slips past the bottom of the screen, it may evolve into a new form and reappear later in the game. Exactly 8 of them are capable of evolving... some of them more than once.
After the game ends, you see a roll call of all the soundly defeated sprites.
EDIT: Updated Oct. 2011 with a title screen, music, and save files.