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Mystery Box Odds Configurator
Author provably-fair tier probabilities, verify live catalogue inventory, and model 10,000 opens.
Drop Metadata & Sizing
Expected Value (EV)
$115
Average return per open
EV / Price Ratio
1.152
Rule: 0.850–0.970
House Edge
-15.2%
Issuer gross margin
Guaranteed Floor
$55.00
Worst-case single pull
Total Payout Liability
$287.9K
At 100% sellout
Configuration Warnings:
- EV/Price ratio (1.152) is outside platform compliance bounds of 0.850 to 0.970. Adjust probabilities or value bands to achieve compliant odds.
- Insufficient vault inventory for tier(s): uncommon (0 available), rare (0 available), epic (0 available), legendary (0 available), mythic (0 available).
Tier Odds & Value Bands
Configure rarity weights and target prize bands. Eligible inventory checks live assets in the catalogue.
Sum: 100.0%
| Rarity Tier | Probability (%) | Min Value ($) | Max Value ($) | Band Midpoint | Eligible Items in Vault |
|---|---|---|---|---|---|
| common | % | $72.50 | 68 items | ||
| uncommon | % | $115 | 0 items (min 4) | ||
| rare | % | $180 | 0 items (min 4) | ||
| epic | % | $335 | 0 items (min 4) | ||
| legendary | % | $825 | 0 items (min 2) | ||
| mythic | % | $2,600 | 0 items (min 1) |
Model 10,000 Opens
Execute a deterministic mathematical distribution run over 10,000 opens to verify margin stability.
