This page contains Arthur And The Invisibles Hints for PC - Windows called "Developer Runes" and has been posted or updated on Jan 15, 2007 by kakak. Let us know what you think of this Hint by thumbs voting.
Free all the Mul-muls from their cages, and they will unlock special Runes in each level. You can check how many Mul-Muls youve freed in the Extras Menu.
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