Warioware fans rejoice!
The Minigames range from basically impossible in that time limit (for me), to really easy, so I'd say it levelled out well.
The music fits great, really gets you pumped. I even like the in-between minigame animation, it gives you a feel of being inside a huge computer system filled with these games.
I was surprised to see a boss at the end, and it actually was designed very well - you shoot at him in the short time between minigames, and he tosses minigames at you from the system to hinder your offence. It was a close call and very exciting because I had only one life left by then. :3