Sims Castaway Stories: How do I get plumbing, and how do I make tools?
If you’re in Story Mode: Once you move to the Shady Lagoon (the hut where you found the medicine) early on in the game, you unlock the Rainwater Tower. Then you can use plumbing. And unlike Castaway for the console, you don’t make tools in Castaway Stories. You find the machete and hatchet very early, and the rest come soon. If you’re in Freeplay Mode: You need to unlock the Rainwater Tower and tools in story mode before you can use them in Freeplay. Hope I helped! Edit: A little later in the game, you’ll move into a Village Residence. There’s a big crate in the sand near the entrance. Once you dig it out, you receive a Wind Electricity Generator thing. Then it’s unlocked in Freeplay, too.