openra.net

Open RA, or Open Red Alert is a version of the old classic stratergy game from the 90s that is free and open source.

OpenRA has two main games built in, Tiberium Dawn and Red Alert, both are alternate history but in slightly different universes.

In the Tiberium universe a meteor containing a new minneral called Tiberium crashed into the earth, thw Tiberium minneral started growing and chaging the earth, there are two factions, the mysterious Brotherhood of Nod, and the UN lead GDI who fights for control over the minneral.

In the Red Alert universe Albert Einstein travelled back in time to kill Hitler, this changed the outcome of WWII and the Soviet Union is now attacking the West.

In both games you take on the task of a commander for either side to ensure victory on the battleflied.