Brian Gills D-Day Rules are designed for 1/72 scale wargames miniatures.
Brian Gill offers Bugs!, a set of miniatures rules for staging battles with large numbers of plastic insects.
Caveman Clash is a set of free wargames rules for playing skirmishes between cavemen. There also are paper figures if you don’t happen to have cavemen available.
Patrick Todoroff offers Firefight 2050, a set of rules for 1/72 figures in a near future setting.
MIG Alley Ace are rules for modern aircraft combat from 1945 to the missile age.