Kampfgrupp OST is a simple Hex based Operational level WWII game circa 1944-1945 East front.
Rules: WWII
Operational Art WWII Rules
Operational Art is a set of free wargames rules for refighting WWII’s eastern front on an operational level scale.
Bloody Big World War II Battles
Bloody Big World War II Battles is a set of free wargames rules for large scale WWII battles. Each base in the game represents a battalion or regiment. The ground scale is either 3” or 6” to the kilometer. Time scale is 1turn = 2 or 1hrs. One model represents 30 or 10 vehicles / guns or half a battalion or company of infantry
Hunters On The Shoreline 1/600 Coastal Miniatures Rules
Hunters on the Shoreline is a set of free wargames rules for playing WWII coastal naval actions using 1/600 miniatures. It’s available from PT Dockyards.
Verdammnis Weird WWII Rules
Eric Laurent has written Verdammnis, a “weird World War II” modification for the excellent commercial rules set “Dogs of War.”
The modifications include rules for Nazi scientists, zombies, super soldiers, and werewolves, as well as providing stats for WWII British, Russian, US and German troops.