Wonderful idea and honestly a blast take on the word "unstable". Very unique. The gameplay is also very fun and interesting.
The level of polish for this game is honestly great and impressively so. It kind of can be a full game already which is really good for a game jam. The idea is simple and executable and your engine of choice "GDevelop" was also an interesting point.
This is purely my personal opinion but while the game was really fun and interesting it didn't really give me that "HOOK" to keep me playing till the very end of it. Maybe if there was a "motive" that could keep me playing, it would've been better, but in general, I enjoyed it :)
Another thing to point out is that the "Tutorial" and especially the dialogue that represents the tutorial should be a bit more "The center of attention". I completely missed the dialogue because I didn't realize "X" would advance it forward at first, so I didn't know how to play the game.
The pixel art is also really lovely!