Not really an endless runner. Unless you count endless tries at the game as well. :D Took me a few tries to understand what's going on, but... it's stacked with clever design decisions! <3 Spikes coming out of the ground force you into precise movement, so you cannot simply button mash. But don't be too slow either, a red lookalike of your character is right behind you! He might get hit by a piano though... :D It won't have any fall animation ("only one" frame) so better make sure, you're not surrounded by a bunch of red exclamation marks. Oh and btw: the levels are randomized, so good luck finding any patterns! Sadly that's also the biggest weak spot of the game: the difficulty curve can feel a bit off a times and after a few times.Amazing little timewaster, honestly did not expect this to be so good!
My game: https://njamster.itch.io/wonkey (playable in browser, not mobile friendly)