Jumpman is a nostaligc, lo-fi retro platformer featuring a layered level design and game mechanics with a twist. Creator Runhello has this to say:
The thought was to kind of take all the things that have become possible in games in the last 29 years– physics, 45 degree angles, a z axis– and bring the new technology into an early-80s-style platformer while at the same time changing the platformer’s basic nature as little as possible. The hope is to try to make you believe that every 2600-era platformer would have looked like this if only you’d pulled the camera back about 4 feet.
Jumpman is a free download for both Mac and Windows. Get it from Runhello.com – via Boing Boing.