Thanks! That's the very first version of the game and we rushed it a bit because we challenged ourselves to publish something before holidays ^^
Features like sounds and visual feedbacks are on their way but they wasn't working 100% so we keep them for the next version.
For the XBOX controller, we didn't tried to implement it so it sure must have weird behaviours.
And yeah, the very first room of the tutorial is supposed to show the basic interactions with gravity but we clearly have some work to make it understandable... X)
Next version should come in the first months of 2019, it'll be better we promise !