A neat idea! I somehow managed to launch myself to the top of the screen by hitting the corner of a platform :D
Unfortunately the text at the beginning was too slow for my taste and having to quit it every time I restarted was a bit tedious.
Yeah there are some funny bugs yet xD
The one you mentioned is something on the slippy physic material I guess.
About the initial dialogue. Had to decide between implement a skip feature or saving data into localstorage. I thought a skip key would be faster to implement but definitely dialogue not showing at all is needed too.
Thanks the great feedback!