The idea is interesting, i like the looks i feel it even takes back even before dos like older pre windows computers which is super cool ^^
the character movement and jumping felt right, however the platforms seem to disappear a bit suddenly, so you either dont really have the time to jump or you double jump and fall because you didn't anticipate the next platform poping right above you because of timing. If you solve this issue the rest is a good base. Well done :)