From Paul Secular Software:
Brand new version of this deceptively simple, yet nail-bitingly addictive, game from Paul Secular Software. Two players vie to take over the sectors of a galaxy (represented by a 6 x 6 grid). SuperNova! can either be played alone against the computer or with a friend.
Each player takes it in turn to place a star into one the galaxy's 36 sectors. Once a player has done this, that sector becomes theirs and only they may place further stars into this square. The only way the other player can take control of the sector is via a supernova from a neighbouring sector. The game continues right on until the galaxy is won.