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Workers & Resources: why do buildings cost money?
(hexbear.net)
Tabletop, DnD, board games, and minecraft. Also Animal Crossing.
3rd International Volunteer Brigade (Hexbear gaming discord)
Rules
You can totally make things without paying for anything other than a minimal starting industry. Look up tutorials for cosmonaut mode if you want to go hermit kingdom. (or if you're really insane, sputnik mode where you install mods turning the place into a horse drawn 1917 economy)