Medieval RTS game Ancestors Legacy dropped its price a couple of years ago, back when developer Destructive Creations added a five-mission Slav campaign. If that wasn't enough to hook you, now there's a free version. Ancestors Legacy: Free Peasant Edition lets you play the multiplayer mode across all 17 of its maps as all four of its factions—the Vikings, Anglo-Saxons, Germans, and Slavs. You also get to play four missions from the Vikings campaign in singleplayer mode.
So yes, it is basically a fancy demo. Have you heard that videogame demos are making a comeback? But this has the added advantage of potentially revitalizing the multiplayer by bringing in some fresh blood, which would be nice for those diehards who've been hanging around since launch.