Mai: Child of Ages follows Mai through a shattered world as she searches for her identity and the source of creatures threatening its balance. The adventure crosses past and future, with a Sacred Plant bridging time and space and changing the world around her. Its story also asks players to piece together the events behind humanity’s extinction and what may follow.
Exploration draws on Zelda-like dungeons and Metroidvania-style progression, while the challenges shift between precision platforming and hack-and-slash combat. Mai uses the Uroboro Stone to freeze moving objects and alter the past, bringing time-based puzzles into the journey. Her abilities also vary across childhood and adolescence, and the description highlights crafting weapons and tools, hidden clues, relics, and optional trials as parts of the adventure.
The store lists both single-player and cooperative play, including shared-screen co-op. In the main adventure, a second player can control enemies to assist in battles, giving the game a distinct cooperative format alongside its solo journey.