Wowza, Trombone Champ rocks!
Trombone Champ is very silly and dumb but also great, and naturally is one of the biggest little surprises of the year. A rhythm game built around recreating one instrument in as silly a way as possible might not sound like the blueprint for the next big indie hit on Steam, but it was. And as players added their own songs to the game it only became even more popular and funny thanks to the absurdity of it all and the awful-but-great music you could create in it.
