InFamous.
Hack n' slash games are just a niche genre, and Ninja Blade will suffer from this. The only decent selling one this gen his DMC4, and it's from a well known series and was released on multiple platforms, and it hasn't even managed to break 2.5 million units altogether.
What's really surprising is that the best selling hack n' slash game this gen on a single platform is Heavenly Sword. It has higher total and weekly sales than either NGII or the ps3 version of DMC4:
http://www.vgchartz.com/swlaunch.php?reg1=All&game1=Devil+May+Cry+4+-+PS3®2=All&game2=Heavenly+Sword+-+PS3®3=All&game3=Ninja+Gaiden+2+-+X360&weeks=80
That's also incredibly sad, seeing as the game will probably never reach two million. The only hack n' slash game that will hit that number this gen is God of War III.
