[6] In December 2017, Stillfront Group AB, located in Stockholm, Sweden, acquired Goodgame Studios.

Goodgame Empire is a free-to-play medieval castle-building strategy game launched in 2011.

The four kingdoms in the game's name are the Great Empire, the Everwinter Glacier, the Burning Sands and the Fire Peaks.

The Great Empire is the main one, where the players build their first castle; as they reach higher levels, they can build a castle for each of the three other kingdoms, in which they can also produce special resources: coal in the Everwinter Glacier, oil in the Burning Sands and glass in the Fire Peaks.

Goodgame Gangster is a free-to-play RPG game, where players advance through levels and rankings in the leader board.