The factory loop is the product
If the dig-sand, wet-it, shake-for-gold loop clicks for you in the demo, full Early Access adds the depth. If it does not, no storefront changes that.
The core loop is easy to judge from the free demo. This page weighs what the demo shows against what full Early Access adds, so you can decide between the demo, a Steam buy, or PC Game Pass.
If the dig-sand, wet-it, shake-for-gold loop clicks for you in the demo, full Early Access adds the depth. If it does not, no storefront changes that.
The deciding factors are cost, platform, and how deep you want the factory to go.
The demo covers the core shaker loop and physics sandbox. Try it before spending.
Full Early Access adds the wider factory, research, and the destructible world.
Game Pass is desktop-only with no console or cloud version announced. Good if you already subscribe and want to avoid a separate buy.
Pair the review with current platform and price facts.