Ever since the Assassin's Creed franchise added multiplayer, fans of the series have known what to expect. This year's Assassin's Creed 4 also includes multiplayer, of course. However, it adds a new feature that promises to shake things up.

"Game Lab" lets players create their own rules in online matches. For example, you can create a mode where players can only be killed using pistols. You can remove specific abilities. According to Ubisoft, there are 200 different things you can tweak when creating custom matches.

Read more: Introducing the "Frantic' game mode »

Whether you like it or not, Assassin's Creed is an annualized franchise, and will remain so until audiences stop being interested in stabbing people square in the face. You have to give the people what they want, right? All the same, it can be jarring to hear Ubisoft talk about its rolling stream of assassin games so frankly, mentioning three are in development right now.

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