I was so excited when I saw this one. WarioWare is by far one of my favorite game series and this concept is brilliant.
Of course, with the 48 hour time limit, I imagine this was quite difficult to implement, but I got a lot of enjoyment out of it nonetheless. You did such a good job at getting the general feeling of WarioWare down in terms of the gameplay. I like the visuals for winning and losing a lot, they're quite fun.
Only real critique I can provide is that I do feel a more fitting song could've been picked, something a bit more chaotic to match the general feeling of WarioWare. But that's just a small nitpick.
Overall I adore this game! Great work! I'd love to see you to work on it further with more microgames!