'Halloween Google Doodle treats searchers to Magic Cat Academy game a day early'. 'Trick Or Treat! Google Halloween Doodle 2016 Launches Cute Game With Ghosts And A Magic Cat'.

^ a b Burlacu, Alexandra (October 30, 2016).

'Google's playable Halloween doodle is pretty neat'. Momo also appears in the Doodle Champion Island Games (2021) Google Doodle. The character of Momo was based on a real-life cat belonging to Google Doodler Juliana Chen.

The game's development involved many rejected concepts and ideas, including elaborate symbols to draw (such as a 'Cat Hat' spell), as well as boss enemies like a chef ghost and a Venn diagram ghost. The original concept for the game involved Momo making soup that resurrects dead spirits. The creation of the game was coordinated amongst four different design groups, relating to art design, engineering, production, and music. This game includes two new movements: a circle, by which the player gets a shield, and a spiral, by which the player pushes back all monsters. 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.

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