3mm gaming is for very small games, small games over large geographical areas, or huge games.
Played so far:
Wings at War, Wings Over Suez. Tactical air combat in the 1950's
Suez crisis of 1956
Wings at War, Scramble For Britain. Tactical air combat in early WW11.
Early air war in the Pacific.
Flight Leader. Post war air to air combat.
Various encounters between NATO and Warsaw Pact forces.
In the pipeline:
Wings at War. Battle of Britain
AWACS:Gulf War. Air combat in the Gulf War. Tried it, crap.
Hind Commander. Ultra modern air/land combat.
Modern land combat, probably using Panzer8.