Stronghold Kingdoms is a free Massively Multiplayer Online game, based on the original Stronghold. Players start on a world owning a small stronghold and have to build their economy and army. Other than in the other titles in this series, this game has a tech tree, uses cards for bonuses and players earn achievements and can rise in rank, all the way up to king.
Game advertises that players can choose to live a peaceful life, focusing on expanding their stronghold and city, choose a more aggressive approach or any mix thereof. At a certain point it is possible to besiege other players.
Graphics haven't changed much from the original Stronghold and Stronghold: Crusader games.