omg omg omg omg make it a post dooms day era. Just change all of the tile sets of the original era map. Aliens have invaded era and forced humanity to move to a new planet (skyworld). Skyzonians have been working around the clock to upgrade their technology so the zoneians can launch a counter-attack and have a chance. The time has arived, the zoneians have prepared for this and the time has come.

Southridge in era has turned into a military base, the water has become toxic and is untouchable or you die. The aliens have esentally turned era into a stratigic area so their ships could be in ranges of the planets in the gralar galexy and launch attacks on the planets there.