Optimum for playability is no more than 20 units per side. Movement - Each unit assigned a numerical value representing its ability to move across terrain. Combat - Each unit assigned a numerical value for combat ability. Map Display - Choose scale carefully. Optimal size of map is 20 by 24 inches, or the distance that players can reach units without assuming awkward position.
Hex grid is used to regulate movement and combat.
Each hex cell contains a discrete type of terrain which shows up on Terrain Effects Chart with its effect on movement and combat. Rules of Use - Explicitly written out procedures to operate model. This also gives insight into the underlying process that drove the situation being modeled. Easiest model to create - Best preparation is simply extensive playing of existing games. Inexpensive - Paper is most common raw material.