Freeform Skirmish Referee is a wargame where two or more players are in control of a force of combat focused units.
The players give the orders for their units to an adjudicating referee who interprets the outcomes of these orders in the game world.
The referee then presents these outcomes to the players.
It is different from most wargames in that the players do not need to know any of the rules of the game (in fact there are none - the entire game depends on the adjudication of the referee).
The players simply need to know what type of fighting force they would like to play and to tell the adjudicating referee the actions they would like that force to take.
Guidelines are presented in this PDF for running the game, creating units, providing orders and adjudicating turns.
Additionally, d6 tables for action resolution and a page of sample units are provided.
—description from the publisher