The 'Thingo' is either a word/phrase/monster ect. that is Runescape related!
The Previous winner picks the Thingo and you got to guess a letter or the what this Thingo is.
If you guess the Thingo right you win and get to choose the next Thingo!
If you guess a letter that is in the Thingo that letter will be revealed!
You can't guess a letter or a word twice in a row. Meaning you have to wait till someone else guesses or bumps.