Battle for Moscow (1986)

Free, relatively simple WW2 wargame.

The basic game lasts 7 turns by each side; the expanded rules set doubles that.

Many of the elements of wargames are presented here: zones of control, combat results table, movement and combat values, full strength versus half strength, terrain effects on movement and combat, turns divided into phases, and weather conditions for mud.

A web-based version of the game also exists at https://oberlabs.com/b4m/