Firefly Studio’s free to play online strategy game Stronghold Kingdoms has reached a major milestone this week with the game has reached one million registered players.

This milestone cements Stronghold Kingdoms’ position as the second most popular free to play game on Steam, which isn’t bad when you consider that first place is held my Team Fortress 2.

For more information on Stronghold Kingdoms, visit http://www.strongholdkingdoms.com/.