Action strategy in the depths of space. Ten galaxies to defend, all available right from the start. Protect your Mothership as it flees from wave after wave of the enemy horde who change their paths while en route.

There is no break between waves so you must quickly build and rebuild your outposts to keep up with the enemies changing battle plans. Outposts grow and gain power by killing the enemy. They shrink and may be destroyed when an enemy invades your Mothership. Outposts that grow into each other are destroyed, so don't build them too close together.

Killing an enemy gains you 1 point and 1 Heart Fire. Letting an enemy invade your Mothership will cost you 3 Heart Fire. You start with 60 Heart Fire. When it falls to zero, you have surrendered your Mothership. Otherwise, the game will continue for as long as you can stave off the enemy horde.