In FissionField two players (blue and red) take turns. A player can either move on a free field or one that is already occupied by his color. When the number of particles in a field reaches the number of neighbouring fields, i.e. 2 for the fields in the corners, 3 along the side and 4 for the fields in the center, the field explodes covering each of the adjacent fields with a particle. If an adjacent field is already covered by the opponent, it will turn over to the player, who made the move. The goal of the game is to eliminate all of the opponent’s particles. As the game progresses and the overall number of particles increases the players’ moves will lead to long chain reactions.

http://archive.gp2x.de/cgi-bin/cfiles.cgi?0,0,0,0,25,2612