How Excalibur works

The game

You spend $EXCALIBUR to attempt to pull the sword from the stone. Every attempt feeds the prize pool. If you pull it, you take the whole pool and a new round begins.

The odds, and why they get harder

Your chance on a pull is not a fixed number. It is tied to the pool:

chance = (1 − houseEdge) × cost ÷ pool

Because the pool grows with every attempt, the chance shrinks as more people play — the sword gets harder to draw the longer it sits. With a house edge of 12.5% and a pool seeded near 7 attempts, the first pulls sit around 1 in 8. After hundreds of attempts, the pool is huge and the odds are long — but the prize matches the risk.

Is it sustainable? Can a bot farm it?

No. Because the chance always scales with the pool, the expected value of every attempt is the same small negative number — the house edge. Nobody can spam their way to a profit, and the pool never grows to infinity: bigger pools pull in more players, so the sword always gets drawn eventually. The house edge is set aside on every attempt and sent to the project treasury.

Fairness & randomness

The draw is random on-chain. In safe mode the game uses a two-step draw — grip the hilt, then pull — so the outcome depends on a block that did not exist when you gripped, and cannot be predicted or simulated. This is the recommended mode for real value.

$EXCALIBUR

The game token, launched on PONS. Contract: 0x4DdBdc1a2F5592B3cEb221203362A15b23E3a9e1. PONS ↗

Contracts