On-chain game assets don't have to be static. You can build NFTs that actually evolve based on what players do—grinding XP, completing crafts, hitting milestones. Every action leaves a mark on the token itself.

But here's where it gets interesting: instead of treating each item separately, stack them together. A character, their gear, their trinkets—link them using parent-child relationships. Metaplex programs make this composable structure possible. Bundle them into loadouts. Swap them around. The whole thing stays cohesive on-chain.

This kind of layered design opens up game mechanics you couldn't do before. Players feel ownership because their items actually *mean* something. Progress is permanent, visible, tradeable.