The problem NFT Craft solves

We are providing the better UX in blockchain game, and this UX could be model case of new usability of Account Abstraction
We are managing object and location data on-chain, and it enables to let multiple users access the same world at the same time, and the world and object can be stored for a long time.

Challenges we ran into

We tried to implement the Account Abstraction session key with Argent X, but the sample has issues at first, so spent a lot of time fixing that.
We tried to build the AI-based game with the Account Abstraction session key, It was a bit difficult to connect the AI part and the game part, so at last, we decided to simplify the game.