It's FRRRRRRRRIIIIIIIIIIIIII-YAAAAAAAAAAYYYYYYY! Woooo! If you're stoked for a brief break from the daily grind and looking for something new to play/do this weekend, then you could hop over to 2Players' website and pick up a free demo of their puzzle/platformer, Super Co-Op Adventure. The title has some very interesting mechanics where you not only control the two characters, but also utilize the "LowNet" to manipulate the environment.
You can check out the action in the video below, and if you like what you see, you can head over here to ask for a demo/"Early Access" copy of the game (it's sent to you via a mail link).
Super Co-Op Adventure is currently in development with no set release date and is available for PC, Mac, and Linux. Two player couch co-op is supported in the game.