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Shop rarity odds by round

Ordinary shop slots use a rarity table that changes with the round. This table describes a rarity roll, not the probability of a particular item or of every slot in the shop. Unique, gated and guaranteed offers follow additional rules.

Ordinary rarity rolls

RoundCommonRareEpicLegendaryGodly
190%10%0%0%0%
284%15%1%0%0%
375%20%5%0%0%
464%25%10%1%0%
545%35%15%5%0%
629%40%20%10%1%
720%35%25%15%5%
820%30%25%15%10%
920%28%25%15%12%
1020%25%25%15%15%
1120%23%23%17%17%
12+20%20%20%20%20%

Epic can appear from round 2, Legendary from round 4 and Godly from round 6 on an unmodified ordinary roll. From round 12, the five rarities each have a 20% share. Rarity upgrades move a roll upward and stop at Godly.

Special offers and item weights

Unique is not a sixth column in this table. Treasure slots have their own chance and pity rules, and gate items can reserve offers. The first shop, skill choices and subclass choices also change what appears. Within a rarity, class access, ownership, recent encounters and item-specific rules affect which item is selected.

Budget for rerolls

The first four rerolls in a round cost 1 gold each; subsequent ordinary rerolls cost 2. A new round changes the rarity table, while another reroll in the same round does not. Compare the shop odds workbench with the run economy planner before spending the gold needed for your next purchase.

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Shop rarity odds by round — Backpack Battles Database