The Supernova is by its nature very unstable, and in constant risk of exploding. Technological advancement may help to keep the Supernova stable.

The expansion contains two Supernova sector hexes and one Discovery Tile. The Supernova hexes are shuffled with the other Outer Sector hexes before building the Outer Sector stack. The Discovery Tile is shuffled with the other Discovery Tiles.

For each Supernova hex, roll two dice in the beginning of the Cleanup Phase. Add their values and the number of Technologies on the track where the hex owner has the fewest Technologies. If th ...