Rocket Robo ($1) is a new 2.5D side-scrolling puzzler from Aaron McElligott. In the game, you guide a little jetpack-equipped robot through a number of bright, twisting levels, picking up stars before you reach the finish line. It’s rated 4+. From the get-go, Rocket Robo is a joy to look at, with bright, colorful levels and a cute little character who bears a passing resemblance to the robots from the 1987 film Batteries Not Included. The handwoven…