According to ESRB, this game contains: Comic Mischief, Mild Animated Violence
For the most part, the Final Fantasy Anthology games are clean with mildly suggestive dialogue, nowhere near as overboard as their 32-Bit counterparts so parents don't have to worry.
Final Fantasy Anthology is a MUST for any Square fan who has never played the originals on the 16-Bit Super Nintendo (you can't call yourself a Square fan if you've only been initiated by Final Fantasy VII or Final Fantasy VIII).
The veteran Square RPG players should buy it just for the chance to finally play Final Fantasy 5 in English. The nostalgia of playing these games is enough to warrant a purchase, but be forewarned that Final Fantasy IV is not included.