Note that this feedback is based on the build(s) available at the end of the jam.
Slime the room! is super cute. There's not a lot of art here, but what there is is charming.
The difficulty curve is for the most part nicely presented, and I like the way that mechanics/hurdles are introduced in environments where they're not overwhelming, but still enough of a mystery that they provide a bit of an "Ah ha!" moment when things click.
I feel like the game maybe could do more to encourage make practical use of mops instead of just avoiding them in later levels.
I encountered the odd physics issue where I would bounce in an unexpected direction when moving at speed (likely to do with the slime passing partway into a wall before physics catches up), but that happened rarely. There are also some issues with keyboard events being mishandled (sometimes holding space will cause the slime to behave as though space is being pressed repeatedly).
I had to give +x permissions to the game executable for this one. Typically, for Windows based developers, this is difficult to have control over, but if you're on Linux or MacOS, setting executable permissions with the "chmod" command on the game binary before zipping up the files will make sure that that's good to go on users' computers after they download and extract them.
I managed to play through all of the levels before I had to move onto other submissions, and had a bunch of fun!
Thanks for your submission and best of luck if you continue development! :D