Ori and the Blind Forest is a platform-adventure Metroidvania video game developed by Moon Studios and published by Microsoft Studios. The game was released for Xbox One and Microsoft Windows in March 2015, and for Nintendo Switch in September 2019. Players assume control of Ori, a small white spirit, and Sein, the "light and eyes" of the Forest's Spirit Tree. Players are tasked to move between platforms and solve puzzles. The game features a save system called "Soul Links", which allows players to save their progress at will with limited resources, and an upgrade system that gives players the ability to strengthen Ori's skills and abilities.