Rated 9+ but really more suitable for adults that bring greater life experience and emotional depth because it’s more about the journey than the goals.
I imagine most 9 year olds would finish it in a couple of hours and then get bored, but for parents of 9 year olds, it’s an adsorbing experience with a surprisingly emotional end. Excellent in every respect: concept, design, soundtrack, context specific controls and plenty of hidden treasures.
And the best instructions of any game ever: none.
No issues on my MB Pro 2011 running Mountain Lion.
Xiao-zhi about LIMBO by Playdead