No.6199
https://xkcd.com/1608/Go out of the play area, you have unlimited jumps. Ignore the red warning text.
If you like Yume Nikki (and xkcd), you're gonna love this. I did.
No music though.
and yes I am well aware it came out years ago. but it's still cool
P.S. there's a super long page with all the goodies about it, including some cheats if you're lost/bored
https://www.explainxkcd.com/wiki/index.php/1608:_Hoverboard No.6479
pretty awesome anon, should've clicked sooner
No.6480
wow this is surprisingly fun to explore, and surprisingly large too. reminds me of the game knytt which is another 2d platformer explorer game with a big world that is fun to explore