Survivor In Rainbow Monster combines Rainbow Friends and Among Us. In this game, you assume the role of a student kidnapped while on a field excursion to Spooky Park.

Your objective is to survive five nights in a lifeless extraterrestrial environment with only the Rainbow Monster for company. You must accomplish a specific quest or challenge each night while evading the Rainbow Monster. Rainbow monsters are currently haunting the spaceship, and you and your companions must go around it and repair the damage they've caused, but if a monster kills you, you'll lose. Monsters can appear unexpectedly, so you must rely on all of your senses. If you observe any image or sound, flee or find a place to hide. If you detect enemies or perceive impending danger, the game provides you with multiple hiding spots in each environment.