turtle class hover artillery by 5 image - Command & Conquer: Mystery of Arca mod for C&C3: Tiberium Wars

Year 2237: Only north half of Earth is colonised, south one is polluted, poisoned and separated by endless electromagnetic storms. Three powerful alliances: Corporation (Europe+Russia), FAR (rest of Asia) and ASUT (North America+Great Britain) are fighting for resources, lands ... And secret alien technology source "ARCA". Who will be first? Who will win and dominate all of the world? And... What is "ARCA"? Is it weapon, knowledge... or the end of humanity?