Swipe (or use the arrow keys / on-screen pad) to roll the block. Stand it upright on the dark hole to finish. Fewer moves = more points; matching par gives a perfect 10.

Every level is out of 10. Only the shortest possible path (par) earns 10; extra moves and hints lower your score. Finishing always counts.

A new 8-level pack opens every Monday at 00:00 UTC and closes Sunday 23:59 UTC. Everyone gets the same levels.

Finish all the week's levels to move up a league. Play some but not all and you stay. Skip the week and you move down one.

Sign in on the home page under Friends to get your link, or tap Share after a level. Friends who join land in your group — and in your league for that week.

Check spam/promotions and wait a minute. Sign-in emails are limited per hour — if it still hasn't arrived, try again later or email [email protected].

Ask your friend to send it again — links look like bloxpuzzle.com/invite/ABCD2345. If it says expired or full, they can make a new one.

No. Anything you scored as a guest moves to your account when you sign in.

Email [email protected] from the address you signed in with, and we'll delete your account, scores and groups.