Spooky Cookie Games

RandoMining, starring R.U.T.H!
Neo-retro arcade-style blasting!
Shooter

Jay officially recommends:

A totally awesome platform game by Tom Sennett and Matt Thorson
Platformer
Sliding Block Action Puzzler
Puzzle
Play in browser
A unique spatial puzzle game with colorful art and catchy chiptunes
Puzzle
Arcade game of evil