The Pool Factory is a speciality bulding for the portable lake ! It cost 650 MM.
I : Make the Portable Lake cost 35 MM instead of 40 MM
II : Make the Lake is bigger (Cost 500 MM)
III : Make buy one portable lake give you two portables lakes ! (Cost 1000 MM)
Total : 2150 MM !
It look like a giant pool !
But this increase the price of the pontoon from 40 MM to 45 MM
Add a photo if you want