Red Army White Guards is a set of free wargames rules for the Russian Civil War.
Here’s a selection of downloadable flags for the Russian Civil War. That’s a period I’ve always wanted to paint and game. I can’t imagine a more colorful selection of armies and characters.
The Jackson Gamers have a very detailed guide to gaming the Russian Civil War.
The Perfect Captain has released a campaign system for his Red Actions! rules set. From the Captain:
We have completely outdone ourselves this time! What if I told you this was a campaign game that takes maybe 30 minutes to create from scratch, with limitless scenarios, a different map each and every time, and has counters representing the following armies and their equipment: Reds (All over Russia), Whites (Kolchak, Deniken, Wrangel, Yudenich, Komuch, Kappelites etc), Greens (Mahknovists), Estonians, Latvians, Finns, Lithuanians, Ukrainians, Poles, Armenians, Turks, French, Greeks, Japanese, American, British Empire (Including Canadians, Australians, and Indians), and Freikorps.
To go along with the previous post on Red Actions!, the free Russian Civil War rules, here is the Jackson Gamers’ RCW site. There’s plenty here to look at!