I like how you constantly introduce new ideas and use them in creative ways to make interesting levels. The Concept is very basic initially but the sticky blocks , sticky yellow blocks and jump pads are the natural evolution of the it.
I also quite like the art. The toasts are wobbly and fun to watch die over and over again.
But I think that the game is a bit too hard for a game jam. I usually appreciate difficult games but in a game jam I just want to come to the end of it. It took me over 200 tries to beat the game and there where some instances where I messed up the last jump or got caught on the edge of a block.
The solution here is to make some of the hitboxes a bit smaller , so you don't fall into the corner of a block ( the green sticky ones . especially in the level where you need to land three of the green block jumps in a row. )
Also you could reduce the falling speed a bit to make it easier to land on the side of a block.
And last but not least I would have really appreciated a undo feature that could have avoided a lot of frustration.