Resident Evil: The Mercenaries 3D contains a (very brief) demo for the franchise's next full-length entry, Resident Evil: Revelations. Ultimately, though, that's an unnecessary addendum: The game itself is a demonstration. It could have been an addictive mission-based multiplayer title perfect for a portable platform, but with its limited content and quickly tiresome combat, Mercenaries 3D is little more than a fully-priced proof of concept.