How an upgrade works, step by step
On an upgrade you stake a skin or balance and aim for a higher-value target skin. You see the multiplier and chance in advance.
- Sign in with Steam — your password stays with Valve.
- Choose your stake: a skin from your inventory or balance.
- Set the target skin; the multiplier and chance appear.
- Start the upgrade and verify it via the round ID.
Chance and multiplier
The chance comes from the ratio of stake value to target value, minus a small house edge. Higher multiplier, lower probability. Roughly:
| Multiplikator | Approximate chance |
|---|---|
| ×1.5 | ~65 % |
| ×2 | ~48 % |
| ×5 | ~18 % |
| ×10 | ~9 % |
Float: condition and value
Float is a value from 0 to 1 for wear: the lower it is, the closer to factory-new. It sets the condition tier and the price.
| Kategorie | Float-Bereich | Value |
|---|---|---|
| Factory New | 0.00 – 0.07 | highest |
| Minimal Wear | 0.07 – 0.15 | hoch |
| Field-Tested | 0.15 – 0.38 | mittel |
| Well-Worn / Battle-Scarred | 0.38 – 1.00 | niedriger |
Provably fair, explained simply
“Provably fair” means the result cannot be tampered with afterwards. Before the round an encrypted value (a hash) is published — like a number sealed in an envelope. After the upgrade you check via the round ID that exactly this value was used.
- Before the round, get the hash of the server seed.
- After the round, have the server seed revealed.
- Check that its hash matches the original value.
- Combine server seed, client seed and nonce into the result and compare.
Signing in with Steam and security
You sign in with Steam OpenID and never enter a password anywhere. The site only sees your public Steam ID, your name and your shared inventory.
- Sign in only through Steam.
- Keep your trade URL and API key secret.
- Keep Steam Guard and mobile confirmation active.
Tips for getting started
- Start small and learn the mechanic before you raise your stakes.
- Check the displayed chance before every upgrade.
- Use provably fair and verify results via the round ID.
- Set firm time and money limits.
Play mindfully
No tool and no strategy guarantees a result. If it stops being fun or losses pile up, take a break and use help such as BeGambleAware.org. Offers with an element of chance are 18+.
