Ring on Tube is a satisfying timing game with more than 100 levels. A long tube is covered with pieces, and your ring slides along it, scraping them off as it goes.
Click or touch the screen to change the size of the ring. Shrink it to collect the pieces stuck to the tube. When an obstacle comes up, widen the ring so it passes over without breaking. Switching between the two at the right moments is the whole game. Clean the tube completely, collect as many points as you can and move on to the next level.