Hydra Minecraft
A fully playable Minecraft-style voxel game in the browser where every block you place or break is a real Cardano transaction on a Hydra L2 head — invisibly, with no wallet, no popups, and no delays. Built end-to-end by Claude Fable 5 from a single prompt.
Hydra Minecraft
A fully playable Minecraft-style voxel game in the browser (Three.js), where every block you place or break is recorded as a real Cardano transaction on a Hydra L2 head — invisibly, with no wallet, no popups, and no delays.
The interesting part
Blockchain games usually make you feel the chain — sign this, wait for that. Hydra Minecraft hides it completely:
browser (Three.js) ──ws──> relay (signs txs) ──ws──> hydra-node (offline head)
The relay server signs each NewTx (CBOR with an inline datum) and streams block deltas back, so the ledger keeps up with your mouse clicks. Survival, TNT, mobs, caves and ores were all added on top.
Built by an agent
The entire thing was written end-to-end by Claude Fable 5 from one prompt (plus three casual follow-ups). PROMPT.md has the exact prompts so you can rebuild it yourself, and EVALUATION.md scores the build. It's a small proof of where AI-assisted, on-chain game dev is heading.
GHOST Finance