Kantai Collection often abbreviated as KanColle was a breakout hit in Japan. This digital card game from DMM has moe-ified World War II warships, which gets a little strange when you combine cards to evolve warships. KanColle exploded in Japan similar to the Senran Kagura series and expanded with an anime plus a PlayStation Vita game from Kadokawa Games.
KanColle Kai is scheduled for spring 2015. The original browser game is the base for KanColle Kai, but the user interface has been redesigned for PlayStation Vita and the character and Kadokawa Games plans to make little changes that add strategic elements to the game.