I'm from Québec and like others have said, Safarir is a VERY good choice, it's the most well-known and read magazine in Québec when it comes to young people as far as I know. Otherwise, the "coolest" magazines are usually magazines for women such as elle and châtelaine.
BTW, I don't know if anyone mentioned this before but, there's a law in Québec which forbids stores to sell videogames WITHOUT french instruction booklets. In other words, unless Alien hominid comes with french instructions, they're gonna be sent back...
Back on topic, if you're trying to advertise Alien hominid in Québec, there's 2 french videogaming shows which you could consider :
- La Revanche des Nerdz (on Channel Z)
- M.net (On Musiqueplus, Muchmusic's sister station)
http://www.rdnerdz.com/emission/la_revanche_des_nerdz/zonefan.jsp
http://www.musiqueplus.com/fr/mnet