Very fun game, I enjoyed it! I like the nonsense humor and the variety of minigames. Everything is pretty intuitive too, but I think the difficulty varies a lot. Some minigames are way harder than others. The letter is incomprehensible to me, I would need at least 5 attempts of trial and error to figure it out but at that point it's no longer a short 90 second minigame. Meanwhile things like the JRPG fight and the tower defense barely require you to do anything on the first stage. The shoot em up is also way too fast, although it was fairly (no pun intended) easy once I realized you can just hold the shield as much as you want. Maybe you could make the shield instant but only for a short duration if you want it to be fast-paced?
One minor bug I found is that the timer still runs when the game is paused and it messed up my score at the end. Everything else seemed to work fine.
And another suggestion I have is that if you're going to have multiple levels of the same minigame I would like to see more new mechanics being introduced, usually there is very little difference between them so it gets a little repetitive.