Docs · SDK

Build a provably-fair game.

Variance Vault is a house-banked variance engine on HyperEVM: one shared LP pool banks every game anyone registers. @freeroll/sdk registers your game as an on-chain value tree, and the chain itselfchecks that the game can neither drain the pool nor cheat the player — so you inherit the pool's full liquidity without funding a cent of bankroll. No approval, no allowlist, no manual funding on testnet: minutes from an empty directory to a settled round you can verify on-chain.