User blog comment:Master Sima Yi/Assassinews 19-03-'14 – Two Assassin's Creeds for 2014?: Unity and Comet/@comment-1379990-20140730183153/@comment-2.124.213.31-20140801191841

Actually Sima, incorrect... some quick googling says that it varies between country (and US state), and specifically Adoptive sibling does seem the more thinner line of them all. http://en.wikipedia.org/wiki/Laws_regarding_incest

I looked at my own country (The UK) and Adoptive siblings is the only thing not included on the list; however adoptive parents ARE on the list. Here is France's Law (Which mentions as far back as 1810): http://en.wikipedia.org/wiki/Laws_regarding_incest#France_and_Belgium

And for fairness, the country of the developer studio: http://en.wikipedia.org/wiki/Laws_regarding_incest#Canada

(Wow, my browser history will now look dodgy :/ lol.