What is Rust Case Opening?
Key facts
- Each case has a fixed contents list with weighted drop probabilities (e.g. a 0.5% chance of the top-tier skin, a 25% chance of a low-tier filler).
- The expected value of an open is the sum of (drop probability × skin value) across all possible outcomes — usually 85-95% of the case price.
- The house edge is baked into the case price; there's no separate rake on case openings.
- Provably-fair case openings use HMAC-SHA256 on the case + nonce + seeds to deterministically pick the winning slot from the weighted distribution.
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Related
Frequently asked questions
- What is Rust Case Opening?
- Rust case opening is a single-player gambling format where players pay a fixed price to open a virtual case and receive one randomly-drawn Rust skin from the case's weighted contents — the expected value of the skin equals the case price minus the site's built-in house edge.
- Rust Case Opening — fact 1?
- Each case has a fixed contents list with weighted drop probabilities (e.g. a 0.5% chance of the top-tier skin, a 25% chance of a low-tier filler).
- Rust Case Opening — fact 2?
- The expected value of an open is the sum of (drop probability × skin value) across all possible outcomes — usually 85-95% of the case price.
- Rust Case Opening — fact 3?
- The house edge is baked into the case price; there's no separate rake on case openings.
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