seems like a cool game and I had been looking forward to play it but it does not recognise my ps3 controller's inputs other than the left joystick and there's no way to rebind keys.
EDIT: no clue on rebinding but if you add INMOST as a non-Steam game to Steam and configure your controller through there, you can launch this game on Steam and have the controller work as it should.
EDIT2: after finishing it and bawling my eyes out at the ending I gotta say this was a great game. Lovely art style, music, and sound. Controls took a bit to get used to since they change a bit for each character. My only complaint? Graphical glitches in the cutscenes, the big Keeper dude suffers a lot from them and the last big cutscene has them here and there which strains the immersion quite a bit.