The lights are on
When a film is too gross, dirty, or disgusting to have a regular trailer do it justice, oftentimes studios will create a special "red band" (i.e. R-rated) trailer that only appears online. This has never really been an issue with video games for obvious reasons, but that hasn't stopped Square Enix from creating a special "Red Band" trailer for their upcoming PSP hack-and-slash, Lord of Arcana.
The trailer shows some of the stuff you'll be able to do in the game when it releases next year, most of which is slicing up monsters in some form or another. Also, there's a lot of blood, so enjoy that.