Oira Jajamaru!

Oira Jajamaru! begins with the protagonist Maru and his companion Cori being ambushed in Central Park. An abduction occurs, leaving Maru to embark on a rescue mission that takes him across international locations.

The gameplay involves navigating side scrolling environments where Maru confronts various enemies, including figures from mythology. His primary means of attack is a rapid spark projectile, though more potent armaments can be acquired during the adventure. Defeating a stage's boss is typically the objective, which may sometimes grant access to these new weapons.

Player actions include jumping to evade threats and collecting hearts to restore health. The journey spans multiple countries, with specific regions like the USA and Romania named as settings.