Remembered I had a 50% off code for select game magazines in my email, didn't think I was going to use it so I went to get it and put it in there. I figured I'd see if it worked first (didn't know it applied it permanently), but it turned out to stack twice by itself giving me 100% off. Ordered Nintendo Power 1 year, PC Gamer 1 year(renewed my sub), Xbox Mag 1 year(renewed my subl), and PlayStation Mag 1 year all for free.. Don't even have a PS3 haha. ( Total was $67ish and it waived it all for me).
So those with a 50% off code - try adding those specific mags and see if it gives you them free as well. ( I had to choose the 1 year non renewal, with no CD versions).
Goodluck.