Cubosphere is a freeware, open-source arcade puzzle game similar to Roll Away.
The player has to guide a beach ball bouncing and rolling it over platforms floating in the sky. The main objective of each level is to reach the exit, collecting keys to open it and all sorts of valuables along the way to score points. On later levels, deadly obstacles start to appear to increase the overall difficulty, like spikes that puncture the ball and rotting platform sections that crumble after a few seconds.
An integrated editor can be accessed directly from the main menu to create custom levels.