Working hard right now on the game.

Image above is from one of Digi Charat nyo episode.

Let me see here,Rinna and Mike Fantasy element:
Rinna and Mike moment= Crazy joke existence
Disgaea(Larharl)=Break the fourth wall.
Riviera The Promised Land:Adventure that just got weirder with more girl around.
Puyo series:Puzzle is fun.
More will come soon.

I think that should explain more of these series influence.