Firaxis Games logo2K Games has announced they will publish three new titles this year from Civilization IV developer Firaxis Games. The first Civ4 expansion, Warlords, was revealed last month, but Sid Meier is also planning to return to his roots with Railroads!, an update on his classic Railroad Tycoon series. Lastly, Firaxis will be collaborating with Stronghold developer Firefly Studios on CivCity: Rome, in which you'll be able to simulate ancient Roman life on an unprecedented scale.

Warlords and CivCity are due out this summer, while Railroads! is expected in the fall.

This article was originally published on Joystiq.

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