As many of us noticed, at one point in the new Final Fantasy Versus XIII trailer, the Prince impales one particular soldier with one of his many weapons. This is no new thing to Final Fantasy, but the effect you are all now thinking of is, blood and gore. FF-XIII.net provides screen shots to see the exact moment in the trailer.
Minor blood has been in Final Fantasy's in the past, like on Sephiroth's face at the end of FFVII and the tiny patch of blood on Cloud's shirt after being stabbed by Sephiroth in FFVII: Advent Children. Those fall under the ESRB Teen Rating for "containing minimal blood". What is seen in the Versus trailer is in no stretch of the imagination "minimal blood", but easily fits into the ESRB Mature Rating's "contain intense violence, blood and gore" category, the article continues.