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OIO is a scrolling platform puzzler, with simple yet intricate game elements with its main goal to collect all the orbs and fragments on each level to unlock the mystery and piece the story together. The player will guide OIO through a series of scrolling levels in the twilight domain, using the seeds he acquires to grow and combine wooden beams to solve increasingly intricate physical puzzles, master the propagation of fire in the wooden world, and climb ever higher.