Celeste on Steam
store.steampowered.com
Help Madeline survive her inner demons on her journey to the top of Celeste Mountain, in this super-tight platformer from the creators of TowerFall. Brave hundreds of hand-crafted challenges, uncover devious secrets, and piece together the mystery of the mountain.

The sale is on until the 28th of November. If you were thinking of buying Celeste, now is the time.