FREE: Cave Story+ (Steam code)

The listing, Cave Story+ (Steam code) has ended.

A fun old-school-style, action-adventure platformer.

Highly rated: 1UP.com gave it a perfect 100

Description from http://store.steampowered.com/app/200900/ (visit link for more info):

Arguably the most well-known indie game of all time, Cave Story features a completely original storyline wrapped with personality, mystery and hours of fast-paced fun. Cave Story is an action-adventure game from the critically acclaimed independent designer, Daisuke Amaya--or Pixel to his fans. Overflowing with unmatched charm and character, Cave Story takes you into a rare world where a curious race of innocent rabbit-like creatures, called Mimigas, run free.

You wake up in a dark cave with no memory of who you are, where you came from or why you're in such a place. Uncovering Mimiga Village you discover that the once-carefree Mimigas are in danger at the hands of a maniacal scientist. The Mimigas’ only hope rest squarely on the shoulders of a quiet, amnesiac boy who can't remember his own name.

Run, jump, shoot, fly and explore your way through a massive action-adventure reminiscent of classic 8- and 16-bit games. Take control and learn the origins of this world’s power, stop the delusional villain and save the Mimiga!

For Windows PC, Mac, or Linux (Ubuntu 10.04+).Requires Steam. (Free download at http://store.steampowered.com/about/)