Thanks! For the character movement speed I had to strike a balance between having a character that is slow enough to feel controllable and fast enough that replaying the game does not feel like a grind. I had thought about adding 'up' as a jump key as well, but forgot to actually implement it. Did you manage to solve the final level of the game, the one that cannot be solved alone, where it all comes together and you have to apply what it means that there is only one game?