Yume 2kki

As an unofficial sequel to Yume Nikki, this game plays just like the original, in which a girl explores her dream world while collecting "effects" that mainly provide aesthetic changes to the main character's sprite. Unlike in the former game, the protagonist, Urotsuki, is able to combine certain pairs of effects so that she can wear both at once. Also present in this game are wallpapers, which are awarded for exploring the dream and observing special events. The wallpapers, of which there are over 160 in total, can then be viewed on Urotsuki's computer in the waking world.

Other features accessible from Urotsuki's real-world bedroom are a BGM player on her computer, and a gaming console with a set of built-in minigames.