Main Hall Level 32 upgrade requirements.
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When Garage is Level 30:
|Main Hall Lv. 32||169,496,550||169,496,550||47,459,030||27,119,440||81,350|
|City Wall Lv.31||–||84,048,280||16,809,650||11,206,430||19,480|
F = Food
O = Oil
S = Steel
M = Minerals
U = Uranium