Momo fights enemies in five stages, each at a deeper level, against ghosts and possessed animals such as an immortal jellyfish, a bank of bogues, a vampire squid and an anglerfish, until reaching the final boss, which is an underwater volcano. The objective and the development of the game are exactly the same, only that the action takes place under the sea, since a ghost managed to escape from Momo after winning the first part, reaching the ocean and possessing various marine animals. On occasion, the player will be allowed to swipe in a heart-like shape to regain health. The swiping directions include a horizontal line, a vertical line, a 'v' shape, a 'ʌ' shape, and a lightning bolt, the latter-most of which summons lightning that weakens all onscreen enemies. Ghosts are defeated by clicking and swiping the mouse in certain directions, pertaining to the symbol atop the ghosts' heads. Momo fights ghosts and bosses throughout five levels, taking place in the school's library, a cafeteria, a classroom, a gymnasium, and on the rooftop. She goes to a magic school and defeats a ghost that steals her spellbook. The first installment, Magic Cat Academy, was released on October 30, 2016, while the second installment, Magic Cat Academy 2, was released on October 30, 2020. Magic Cat Academy is a series of browser games created as Google Doodles in celebration of Halloween.

Magic cat academy