Shells become buying power
The public game description confirms that crabs dig shells and shells turn into cash. Exact exchange rates can vary by visible in-game state, so the calculator asks players to enter their own rate.
Shells and Cash
Shells are the visible production resource in Crab Tycoon. Your crabs dig them up, then shells can be turned into cash for more crab production.
Use a one-minute shell test
After a purchase or merge, watch the shell counter for one normal minute. That gives a practical shell-per-minute input for planning the next cash target.
No hidden formula claims
This wiki does not publish exact shell multipliers, cash formulas, or price tables until those values are live-verified and source-backed.
Search-state shift
Why shells pages now need appraisal and upgrade context
Fresh public competitor wording now repeats appraisal speed, shell rating, upgrade-first language, and separate hatch-eggs phrasing around the same shell economy loop. The official Roblox page still verifies shells, cash, merges, and offline collection first, so this page keeps those verified mechanics visible while linking out to the newer status routes.
Shells still anchor the economy
The official game description still confirms that shells are dug up by crabs and turned into cash, which keeps shell rate and shell-to-cash planning as the most reliable public loop.
Appraisal and shell-rating terms are now public demand
Current guide and search surfaces now repeat appraisal speed and shell rating phrasing. Use the upgrade-status page for those terms until a creator-owned source or direct UI check settles the exact labels.
Next action
Turn shell data into a decision
Use the planner after recording your visible shell rate. Compare open slots, duplicate crab pairs, and offline shell claims before spending cash.