Game that you're good at?/Educational games

Whats the game that you're really good at, that you master most of the times or even all the time? It can be more than one game if you're good at more than one? Also, what are some android or iOS games that you can actually learn something from?

I'll start with one educational game: Total Trivia. This is a game that can be downloaded on Android phones and is very educational. You're given topics on major subjects and you answer trivia questions on whatever topic you choose. You're awarded small prizes also.