Turknor

This is one of the most polished experiences you can find on mobile. Everything about the game is enjoyable - from the characters and story to the gameplay. It is really difficult to build a platformer with mobile input that still feels tight, and these guys nailed it. I'm also very happy they went with the 'first world is free' monetization route. No adds, no paying for in-game items, just buy the full game after you've already fell in love.