https://store.steampowered.com/app/1154680/The_Guise/
The Guise is a dark metroidvania fairy tale about a boy trapped in the body of a monster. Can he hold onto his humanity? It's up to you.

INSTRUCTION FOR ACTIVATION:

1. You must download and install Steam http://steampowered.com/download/SteamInstall.msi
2. Log in to your account or register a new one.
3. Go to the "My Games" section and select "Activate via Steam ..." and enter the key received after payment.
4. After activation, the game will appear in the list of games (Library) and you can download it