Rovio, the maker of the Angry Birds apps, have done it again. Each time I try to write this article about their newest app, Retry, I keep getting sucked back into playing. This addictive game is similar to Flappy Bird, but with obstacles, challenges and the ability to track and earn achievements. Tap the little airplane and try to make it through the level. If you hold for too long, the plane will do flips and go crazy. Kids and adults will all be competing to try to finish each of the levels without crashing. The best part of this addictive game? It's FREE!