Thanks you!
And yes, it was done in 3 hours. With Pico8, these tiled-based games can be done super quick if you have done similar ones before, since the game doesn't really have much. The main glitchy graphics effect was super fast to implement, it's not exactly what I planned for, but it's explained in a comment of mine below.
You can check other entries from this Trijam or others, and you'll find many better games done in 3h as well :)