Mature steam, first gasoline, the cusp of electricity - a curated Create 6 survival era-pack: rail empires, oil fields, physics airships, industrialized enchanting, and ruins worth an expedition.
The Field Catalog - a quest UX update (no mod changes):
11 new bounty quests, visible from the start: notable treasures to hunt (Heart of the Sea, a trident, sculk sensors, ancient debris, a goat horn and more) that tick off automatically the moment the item is in your inventory.
Purse rewards: many quests now pay from weighted loot pools - usually coal, sometimes gold, once in a blue moon something precision-made.
House Rules: finishing The Back Room now offers a pick-one reward.
Field notes: nearly every quest description now ends with a practical where/how hint.