Ori and the Blind Forest is a platform adventure video game designed by Moon Studios, an independent developer, and published by Microsoft Studios. The game was released on March 11, 2015 for Microsoft Windows and Xbox One. An Xbox 360 version is scheduled to be released later in 2015.
The voice of the Spirit Tree in the forest of Nibel narrates the story, about when Ori fell from the tree during a storm as a newborn and was adopted by a sasquatch-like creature named Naru, who raised Ori as her own. A cataclysmic event soon makes the forest and its food supply wither, and Naru dies. Newly orphaned Ori was left to explore the forest on his own. After collapsing near the Spirit Tree of the forest and being restored to life by it, Ori later meets Sein /saɪn/, a being who both guides Ori on his adventure and attacks enemies. In order to restore the forest, Sein guides Ori to recover the light of three main elements supporting the balance of Nibel: Waters, Winds and Warmth.
Ori and Sein come across two beings in their quest: Gumo, the last survivor of the spider-like Gumon clan and whose home supports the element of Wind, and Kuro, a large female owl who is hostile towards Ori. Her hostility and the forest’s cataclysm are explained in flashbacks: when Ori was lost, the Spirit Tree released a flash of light in order to look for him, which killed all of Kuro’s recently hatched offspring. To protect the egg with her remaining unborn child, Kuro took away the core on top of the Spirit Tree, which is actually Sein. Without the Spirit Tree’s support, the three elements cannot be sustained and thus Nibel lost its balance. As the element of Winds are rekindled, Gumo, realizing what Ori and Sein intend to do, uses his clan treasure which stores the light from the Spirit Tree to revive Naru, and takes her to where Ori is.
After the final element, Warmth, is restored in the volcano Mount Horu, Kuro captures Ori and Sein as the fire from Horu starts to spread. Naru arrives to find Ori unconscious and is heartbroken, which makes Kuro remember how she also was struck by the pain of losing her offspring. As the fire spreads and is about to reach her remaining egg, Kuro takes Sein back to the Spirit Tree, which emits a flash of bright light restoring the forest, but Kuro is destroyed by the light. As the forest flourishes again, Ori stays with the Spirit Tree and its kind, Gumo and Naru stay together, and Kuro’s remaining egg is moved to Naru’s home and hatches.