I like that the game switches between the 4 minigames throughout the 20 seconds. It's like a more frantic version of Wario Ware games. It is helpful that the player is given a second at the start of each minigame to deduce what's going on.
I like that each minigame visually looks different, but the game's overall style is consistent throughout each scene. I think it also helps the player in figuring out what to do as well, and helps with context switching.
Excellent work on making each minigame play differently to each other - It adds to the hectic feeling as you have to recontextualise the controls. This is probably my only suggestion for an improvement: more minigames! Would there have been more minigames if the time limit were more than 20 seconds?
Music and sound effects were very well done - I enjoyed the energetic background music.
A chaotic roulette of minigames.