What a charming game!
I really like the rippling sprites, they add so much charm to otherwise static imagery!
The bowling background is *chef's kiss* perfect!
I think you could go a long way to making really interesting puzzle by requiring scenarios where you have to release Blobby: have them roll down a hill through a gap Feather can't go through for instance, or toss them over a gap and catch them on the other side.
The little polish points throughout the game are delightful and impressive for a game jam time frame!
Good luck in the jam!