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Gem Simulator

Pick the source, enter amount and unit cost; see what drops, how much you burned and whether it pays off in the long run.

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What does this page do?

Every gem, fragment and box has a fixed drop table. The simulator draws weighted from that table to produce as many items as you entered; then multiplies each item by its estimated price to get the round's income and subtracts the cost you entered.

Expected value ignores a single round's luck; it's the table average. It shows what you'll earn per unit in the long run. Risk analysis repeats the same setup dozens of times and gives the best, worst and average result — that's where "what if I get unlucky" is answered.

Prices are default estimates. Change the price boxes in the table to your own server's values and the whole calculation rebuilds instantly.

Warning

This tool is a mathematical probability simulator. It involves no real money, prize distribution or asset transfer. Real in-game results can differ from the table here because of luck; this is not investment advice.

There's a built-in default list based on the general market average; items not on it are estimated from the name pattern (chitin, old, scroll and so on). The value you type in a result-table price box replaces the default for that item and is kept even when you switch source.

Crack runs a single round — as if you really cracked them, you see whatever luck brought. Risk analysis repeats that round as many times as you pick (25/100/250/1000) and gives the distribution: how many rounds were profitable, how much the worst round lost.

By the weight value in the drop table: Normal, Rare, Very Rare and Mythic. The colored bar in the summary panel shows what share of the chosen pool is which rarity — if the bar is all grey, surprises from that pool are unlikely.

Yes. Amount is how many stones are cracked in one round; the result table shows how many of each item dropped in total. The round count in risk analysis is how many times that round is repeated.