Odds and fairness
Every card is a page of the English Wikipedia. Here are the exact chances for every pack.
Free daily pack
6 cards, one every 15 minutes (reserve of 15). Cards 1 to 5 use the standard odds; the last card is always Holo, with better odds.
| Rarity | Cards 1–5 | Holo card |
|---|---|---|
| Common | 62% | 40% |
| Uncommon | 25% | 32% |
| Rare | 9% | 16% |
| Super Rare | 3% | 8% |
| Ultra Rare | 0.9% | 3.5% |
| Legendary | 0.1% | 0.5% |
Premium pack
25 cards for 0.08 SOL. Cards 1 to 18 use the standard odds, 1 card is guaranteed Super Rare or better, 1 card is guaranteed Ultra Rare or better, and the last 5 cards are Holo. About one pack in 150 turns a non-Holo card Shiny.
| Rarity | Cards 1–18 | Super Rare+ card | Ultra Rare+ card | Holo cards |
|---|---|---|---|---|
| Common | 62% | — | — | 40% |
| Uncommon | 25% | — | — | 32% |
| Rare | 9% | — | — | 16% |
| Super Rare | 3% | 75% | — | 8% |
| Ultra Rare | 0.9% | 22.5% | 90% | 3.5% |
| Legendary | 0.1% | 2.5% | 10% | 0.5% |
OG Edition
35 cards for 0.2 SOL · 420 packs only, never reprinted. Cards 1 to 22 use the standard odds, 2 cards are guaranteed Super Rare or better, 1 card is guaranteed Ultra Rare or better, and the last 10 cards are Holo. 1 of the non-Holo cards is always Shiny.
| Rarity | Cards 1–22 | Super Rare+ card | Ultra Rare+ card | Holo cards |
|---|---|---|---|---|
| Common | 62% | — | — | 40% |
| Uncommon | 25% | — | — | 32% |
| Rare | 9% | — | — | 16% |
| Super Rare | 3% | 75% | — | 8% |
| Ultra Rare | 0.9% | 22.5% | 90% | 3.5% |
| Legendary | 0.1% | 2.5% | 10% | 0.5% |
Shiny cards
About one pack in 150 (0.67%) turns one of its non-Holo cards Shiny. Within a rarity, every page has the same chance.
Grading
Grading a card costs 7 $WKC (each pack you open gives 3 $WKC). The grade follows a bell curve centred on 5.5, rounded, between 1 and 10. It is final.
| Grade | Chance |
|---|---|
| 10 · Perfect | 0.4% |
| 9 · Superb | 1.9% |
| 8 · Excellent | 6.8% |
| 7 · Very good | 16.1% |
| 6 · Good | 24.8% |
| 5 · Fine | 24.8% |
| 4 · Fair | 16.1% |
| 3 · Worn | 6.8% |
| 2 · Poor | 1.9% |
| 1 · Damaged | 0.4% |
How paid draws can be verified
- Before you pay, we show the fingerprint (SHA-256) of a secret server seed chosen for your next purchase. It can't be changed afterwards.
- Your browser adds its own random seed to the order.
- Every random number of the order is
HMAC-SHA256(server seed, "your seed:order id:n"), n = 0, 1, 2…, read as a number between 0 and 1 (first 53 bits). - For each card: one number picks the rarity with the odds above, the next picks the page within that rarity (a page seen twice in a pack is drawn again).
- After payment we reveal the server seed. Check that its SHA-256 matches the fingerprint you saw, and recompute your cards.
Payments go straight from your wallet to the game's treasury on Solana. The game never holds your funds or your keys.