Frobisher Says is a really fun series of mini games that is best described as Warioware on acid.
There is no tutorial, you’re thrown into it head on, thankfully the game allows you to reach your objective even though the timer runs down. So when you meet it again you have an idea of how to beat it. Which is fantastic.
It is the perfect bus journey game, though you will need head/earphones as the instructions are spoken, though I guess with the visual cues its pretty easy to pick up what to do. Though beware! There is a mini game that will leave you looking like an idiot as you’re waving your Vita around trying to make objects appear!