> For the complete documentation index, see [llms.txt](https://docs.breathofestova.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.breathofestova.com/on-chain-design.md).

# On-Chain Design

## Why Monad

Monad's parallel execution is what makes on-chain assets viable inside a live MMO rather than in a menu bolted onto one. Equip a card, trade an item, settle a duel stake, those need to confirm at gameplay speed.

## Embedded wallets

Players do not need a wallet to start. One is created for them at signup, players who already have a wallet can link it in settings.

Purchases are priced in USD and settled in ETH, SOL or MON via oracle conversion. Fiat purchases run through on ramps. 

The on-chain surface expands substantially with the main game.