Wonders makes no sense in game (coop)
My suggestion if possible
If you build a Wonder, for example
Wonder (Greek) - All Buildings 20% more Health
Wonder (Egyptian) - the whole map is open
Wonder (Persian) - All Units Regeneration Health 1.0
Wonder (Celtic) - All units 10% Attack
Wonder (Babylonian) - 1.0 Resources
Wonder (Norse) - All units 10% speed
you can do it differently, the main thing is that Wonders have an effect in game
My suggestion if possible
If you build a Wonder, for example
Wonder (Greek) - All Buildings 20% more Health
Wonder (Egyptian) - the whole map is open
Wonder (Persian) - All Units Regeneration Health 1.0
Wonder (Celtic) - All units 10% Attack
Wonder (Babylonian) - 1.0 Resources
Wonder (Norse) - All units 10% speed
you can do it differently, the main thing is that Wonders have an effect in game