Silver Shell Event Spend Calculator

Work back the cheapest pack plan from your target Silver Shells. Checks every combination within the 5-day purchase limits and free shells, and whether the ¥800 booster pays off.

Enter a target number of Silver Shells, and the calculator checks every pack combination you can buy over the 5 days and returns the cheapest plan (or the one with the least surplus).

Note on pricing: Prices are Japan-server yen (approximate, tax included). Free shells are counted as 5 per day and 20 per day for 5 days, plus 25 from line rewards. The English names “Silver Shell” and “free-bonus booster” are unverified against the English client.

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