The Adventures of Looppy (PC) Steam Chiave Global

A puzzle platformer game with a gradually increasing level of difficulty from casual to hardcore.

The main character is the unicorn Looppy, from whom his sister was stolen. During the game you have to face various monsters, find ways to get around traps and solve many puzzles. Almost every level has an alternative way of passing and hidden locations in which you can find crystals to open additional levels, as well as bonus lives that you will need so much during the passage.