Card City Nights

Card City Nights is a series of adventure card games from Ludosity. The original Card City Nights was released in 2014, and a sequel, Card City Nights 2, in 2017. The series is full of references to other Ludosity and Ludosity-related games. Many Ludosity characters appear as "alternate universe" versions of themselves, such as Ittle Dew's counterpart "Little Dude", or Goddess of Explosions as "Galactic Dominator".

In Slap City, the battle stages Harbor Street and Bear Mine are based on Card City Nights, and use arranged music from the game. Other Card City Nights music can be found in Slap City, either selectable in versus mode by default, or as music unlocked through Story Mode.