1920's Swimming Pool

{u}{u}: Upgrade your Swimming Pool.
{x}{t}: Invite and Connect X Target Players.
Gain 1 Experience Point per Player.
Swimming Pools are Extra Rooms to a House.
They're expensive but offer a chance to expand.
https://f.jwwb.nl/public/t/a/x/temp-ntbrmctkplwrxtntuqsk/1578687584916.png