Make the planets converge in SpaceCNX!

Play this Shisen-sho mahjong solitaire variation with out-of-this-world images! Planets (including everyone's favorite former planet, Pluto), constellations, stars and spaceships dot the night skies. The background images themselves highlight some of the most amazing night skies NASA has captured with the Hubble Space Telescope and the Solar Dynamics Observatory.

The rules are simple: connect matching pairs with at most three lines. It's great for mahjong solitaire players looking for a new challenge. But don't worry if you get stuck. There's hints and mulligans to get you out of tight spots.

Fun controls, spacey sound effects and subtle animations mix with three different levels of play to create a game suitable for astronauts of all ages. Maybe you remember the moon landing or maybe your grandpa told you all about it! Either way you'll get addicted to clearing the landing pad to make way for the next launch.

So climb on board with SpaceCNX--it's all systems go!