If you finish a word, you get a letter (G-H-O-S-T).

Words have to be at least four letters long.

Example:
If the first person starts with T, the second added A, and the third added C.

If you want to spell Tackle, you add K, you get a letter, because you spelled Tack.

If you don't think the person before you is correctly spelling a real word, you can challenge them.

If they can't tell you a valid word, they get a letter.

If they can, however, you get a letter.