Earth 2150: Lost Souls (2001)

Take the completely 3-dimensional landscape into account while planning your troop movements: you'll need to scale towering mountains, dig out protective bulwarks and create entire tunnel systems. Explosions and detonations can change entire regions in an instant. “Lost Souls” sees the end of our beloved planet Earth. Devastating wars between the Eurasian Dynasty and the United Civilized States have wreaked havoc and caused mortal wounds to our planet, glaciers melted, the sea rose to a threatening level, and meteorite showers buried whole parts of the world. The only hope left for the population was the escape to the red planet Mars.