GameFi Development
Axie Infinity $800M/month → 18 months later 98% token down. Economics was Ponzi: new players buy from old, old exit when supply exhausted.
Economics Failures
Inflationary without sinks. Utility token must be consumed: crafting, upgrades, fees, breeding.
NFT without utility. Item must have gameplay value, be consumed, needed for progression.
On-Chain vs Off-Chain
On-chain: asset ownership (NFT), trade, finances, random. Off-chain: gameplay, combat, world state.
Dynamic Metadata
Fully on-chain (mapping): expensive per update. Hybrid: off-chain, hash in tokenURI.
Breeding
Two parents → burn tokens → mint new. Use Chainlink VRF for honesty.
Marketplace
ERC-2981 standard but enforcement: whitelist transfer only to approved marketplaces.
Timelines
Basic: 8–16 weeks. Full: 4–8 months.







