Gold is a resource in They Are Billions.
Gold is mostly generated by the colonists. The more colonists in the colony, the more gold that will be produced. Better houses generate more gold. Also, some special buildings like the Command Center, Bank, Market or even quarries with access to gold deposits can generate gold too.
- Gold is used to pay for everything and accumulates automatically. The best strategy here is to keep it in circulation, i.e. building new homes or selecting new research options at the workshops. If you have maxed out gold, you are either in the endgame or something went wrong (like zombies invaded).