Yume Nikki (ゆめにっき, lit. Dream Diary) is an adventure game made by pseudonymous Japanese developer Kikiyama. It was developed using RPG Maker 2003, but lacks many gameplay elements commonly associated with role-playing games. The player explores the dreams of the protagonist Madotsuki and encounters a number of surreal locations and creatures. The player's goal is to collect 24 effects, which are items that change Madotsuki's appearance or equipment.