Would have loved to play the other precision/puzzle platformers in this jam, but unfortunately for the jump button only rarely works for me - making completing even the first level not possible. Not sure if this is because I am running the game in a sandbox?

cool idea. The Idea to move the Level itself is nice. But as other said, it is very hard. I gave up in Level 2 because i couldnt move the platform to the right without killing the square. While a minimalistic approach is okay, i think the game could have used some "juice". Scrreenshakes on death etc.