Note that this feedback is based on the build(s) available at the end of the jam.
CataBlock's puzzle design is surprisingly fun and engaging, and ramps up consistently in difficulty. I played up to level 10 before I needed to move on to other games, but I did come away with the impression that some of the really tight gaps in that level were a touch too tight.
Unfortunately, there are some issues with keyboard events being mishandled (holding Space will cause the game to behave as though Space is being pressed repeatedly). This problem is present in your other submission as well, but in this case mouse controls provide a workaround.
On the note of controls, mouse X/Y input and WASD feel far too sensitive. I needed to turn my mouse's hardware DPI setting down to its lowest setting in order to be able to be able to play effectively.
I also 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.
The secret levels are a nice touch. The zero gravity level provides some interesting variation on gameplay, although an inability to reliably orient myself to be aligned with a wall in order to jump off it made that level feel a lot more tedious than it needed to. When finishing that level, the game also doesn't return back to the previous level/continue to the next, leaving players stuck in the green rectangle until they restart or quit to the menu.
This is the stronger of your two submissions, and it seems to me that you made a good decision on which one to focus on!
Thanks for submitting and best of luck with the project if you continue development! :D