Sadly it seems the controller support needs some work, it doesn't seem to detect any input from the Steam Controller on Ubuntu.

Please fix this dev's. It lags when fighting in single player

any spectator mode online?

So the other day I had my friend come over and we tried to play this but when I plugged in my controller to let him play it made us both the same character when we started. Basically I chose Daxter and he chose Arc but when we started it made us both Daxter then when we quit the battle it thought we were both Player 1. I don't know what's going on....

I'm using a HORI Switch Battle Pad for this, and my left and right are swapped during matches. Not in menus, just when I try to play. Some other buttons I bind also end up not being accurate.