SnakeLogic - The puzzle based snake game
Battle of the Brands - Compare the online awareness of 2 brands in a battle
Gumroad Small Product Lab - Bite-sized lessons to help you launch your product.
Inbox Creature - A super cute virtual pet, delivered right to your inbox.
Productbox - Talk with fellow product managers about how you do stuff.
Pong Quest - A classic pong quest through unique levels full of twists! Plus 2 player mode!