The blob has slightly different physics depending on circumstances. Normally the blob doesn't jump too high either way, although there are some tricky secret moves that increase mobility a little bit. They aren't needed to complete or enjoy the game, though.
Yep, most of my games have heavily relied on text, so I wanted a change of pace this time around. It was a surprisingly pleasant experience actually. The environmental storytelling perhaps wasn't quite as good as I would have liked, but game jam things.