(I totally feel like there should be an exclamation point there.)
Game type: browser-based, side-scrolling platformer
Time demand: Maybe a couple minutes if you're good... for each game anyhow.
What it is: I want to say that this should be played ironically, in self-defense. But I must admit to just liking it. I think it just tickles the twelve-year-old girl still lurking in my psyche.
Anyhow, you control a robot unicorn, which gallops constantly onward while the scenery scrolls from left to right, and you have to jump or double-jump over obstacles (with Z), or from one cliff to another, and dash through stars (with X). You gain points for collecting little.. rainbowy floaty.. things (seriously, I haven't been able to see yet what they are) and for dashing through the aforementioned stars. You have three wishes, aka lives, and the goal is to get as high a score as you can.
So go to it! Try it out! (And I dare you not to get the music stuck in your brain...)
(Although I will note I usually have problems loading it with my adblock enabled, so you may have to make exceptions, or turn it off temporarily.)