Yochi (予知, “to know before it happens”) is a prediction gaming platform built natively for Hyperliquid’s HyperEVM. Players stake USDC on one of the simplest questions in crypto: will the next candle close up or down?
Players don’t need to manage leverage, liquidation risk or an order book. They simply choose a direction before the timer runs out.
The platform will launch with three game modes:
FFA is the 24/7 parimutuel mode built around the next five-minute candle. Players stake into a shared pool while the current candle is still running, predicting the direction of the next one. Positions are public as soon as they are placed: usernames in chat change colour to match the player’s call, while larger bets trigger fish, whale and other stake-sized animations over the chart. Winners split the losing side’s stake, minus a flat protocol fee. FFA began as a fork of PancakeSwap Prediction’s battle-tested contract, then added lazy-initialised rounds and refunds for ties and one-sided pools.
Duels is a 1v1 mode played on the current one-minute candle, with a 15-second window to make a call. Players can join a matchmaking queue or challenge each other directly, with Sudden Death, best-of-3 and best-of-5 formats and custom stakes. Picks are signed with EIP-712 and relayed by a keeper, allowing matches to begin as soon as both players commit. The relay cannot forge picks, alter results or access player funds.
Battle Royale is an elimination mode for 3 to 10 players, also played on the current one-minute candle with a 15-second decision window. Wrong calls eliminate players; the last remaining player wins the pool, while eliminated players can spectate the rest of the match. Battle Royale will initially open for scheduled events and weekend competitions before moving to continuous matchmaking once there is enough player activity to support it.
The game modes are supported by a wider social and progression layer designed to give players reasons to return beyond any single match. Yochi includes global chat, player profiles, friends, nemeses, XP, levels and global leaderboards. The nemesis system tracks head-to-head records and alerts players when a rival enters an FFA round, including which side they have backed. Players can build rivalries, track their progress and compete for position across the platform.
All three modes settle using Hyperliquid’s own oracle price feed, oraclePx, accessed through a HyperEVM precompile.
Hyperliquid already has the audience Yochi is designed for: traders who understand price action and want a lightweight way to express a market view without opening a leveraged position. Building on HyperEVM gives Yochi direct access to Hyperliquid market data while placing the game inside an ecosystem already familiar with directional trading, short timeframes and on-chain risk.
All three launch modes are currently live on HyperEVM testnet, with final testing and the mainnet deployment now the primary focus. More game modes are already in development. Forecast, a longer-duration prediction mode built around weekly markets, is nearing completion and will follow the initial mainnet launch, while further modes are currently being prototyped.
Documentation: https://docs.yochigg.xyz