You are this crab:

Picture of a crab

Zoom using the mouse wheel or pinch gestures.

Pan around by clicking and dragging.

Move by clicking spaces adjacent to yourself.

Click neighboring spots to see what your options are. If there are any, they'll come up in the form of buttons like "Take" and "Bonk".

You are trying to get the GRAIL because you have heard it is the greatest possible shell a hermit crab could have.

Some levels may not be winnable because the rocks are laid to make passage to the Grail impossible. Just reload the browser if you don't like the level.

Art by Katt and design and code by Jim. Sign up here to get notified when there's updates to this game.