dude where my planet.png There have been a number of games in recent years where the mechanics revolve around using gravity to leap from planet to planet, including Frozzd and Space Hopper.

In Ludum Dare entry Dude, Where's My Planet, the mechanics differ from the usual 'use the jump button to launch yourself toward the next planet'. Instead, you take a run-up so that you automatically launch when enough speed is built up. The trick is to try and get your trajectory at the correct angle to land on the next habitable planet. Avoid planets with spikes and get to the cannon, which will launch you toward the next batch of planets to navigate.

The game has a refreshing art style all of its own and solid physics to boot. Give it a play here.