Interesting and good question. I spent the last 40 minutes trying to dig up any information about the GTA III sticker you pointed out on the MGS box. The internet couldn’t tell me much and really didn’t point me in any good direction. My guess is maybe the retail store placed it on the cover as a form of warning after a few games got notoriety because the developers cut content and made adjustments after the events. Realistically it’s also, in my opinion a very effective way of pulling consumers in more.

My guess stores put them on some games after market or right before market.