What do you do if you’re playing League of Legends, the free real-time strategy game with over 100 champions that gamers must employ to conquer their opponents, and you can’t keep track of each hero’s detailed strengths and weaknesses? If you’re twin brothers Keith and Ken Hanson, you build your own app as a sort of iPhone-enabled cheat sheet. Then you jump back into the competition and destroy your opponents. “At first we sucked horribly,” Keith Hanson told me a month ago when we talked about their League of Legends app, Pentakill. “While we were playing, we felt so lost…so we wanted to have a reference guide in our hand.” Source: PentakillChecking up on a character’s skillz Keith — the engineer of the pair — coded an app in his spare time.