Chordify - Chordify turns any music or song (YouTube, Deezer, SoundCloud, MP3) into chords.

Super Meat Boy - Let's start with what's the same: Dr. Fetus is still a jerk, gameplay is super challenging but fair, there are tight controls and great levels and you will die. a lot.

muted.io - A magical collection of interactive music theory tools & visual reference pages for musicians and music producers

Limbo - “Dark, disturbing, yet eerily beautiful, Limbo is a world that deserves to be explored.” Joystiq. “Limbo is as close to perfect at what it does as a game can get.” Destructoid. Buy LIMBO: Special Edition.

soundrop - Soundrop is an app that allows you to create your own personalized sound track to keep you focused or relax.

Hollow Knight - Descend into the Dark Venture down into a beautiful, ruined world of insects and heroes