What it is
Broken Reefs is a turn-based naval combat game: pick a zone, sail, fight or find treasure, push deeper or turn back. There is no reflexes-based twitch element — every fight resolves on the choices you made, at either of two ranges, against a resolver that shows its work.
It began as a prototype for naval mechanics inside a larger game and stands on its own well enough that it now ships as a standalone mini-game that keeps evolving in place.
The no-account promise
There is no account, no email, no password, and nothing to recover if you lose it. A career is identified by a session id in this browser's local storage and nothing else. Clear that storage and the career is gone — not archived, not recoverable, gone the way a real ledger would be if you dropped it overboard.
That is a trade, stated plainly: convenience for permanence. If that trade is wrong for you, this is not the game to keep progress you need to keep.