Missile Gap is a two player game played for six turns with players taking alternating turns.
Each player starts with 3 missile bases, containing 3 missiles each for a total of 9 missiles per player.
If a missile base is destroyed all the missiles in that missile base are destroyed as well.
On a turn a player may choose to fire or disarm any of their missiles. Missiles can be fired at either cities or bases.
A missile will always destroy a city, but missiles only have a t/6 chance of destroying a missile base (where t is the current turn number). This means as the game progresses missile bases become more vulnerable to attack.
You gain 1 point for every city you destroy and lose 2 points for every city of yours which is destroyed.
The object of the game is to get as many points as possible (not neccessarly to get more points than the other player).