"Step on a crack and break your mother's back" is the English idiom that comes to mind. The game has definitely captured this feeling spot on. My biggest calms with this game is it was too slow and too random.
Some ideas for future improvements:
- The footstep is applied about 2-3x faster so you can get higher scores faster.
- The tiles start large and get smaller at later levels.
- The foot motion pattern is somewhat predictable in early levels and becomes more sporadic later.
Good job on this!