Elements Mortal Kombat 2011 Borrowed From Other Games
Well I just thought that there's really "no patent" for some systems. Here are just some stuff you have to consider were taken from other games:
1.) The fighting system by default takes it away from Tekken in some way. The idea that the block button is still used is taken from Virtua Fighter and Soul Calibur. The whole button for each limb system seems to follow from Tekken while still keeping jump physics in par with Mortal Kombat.
2.) The combo breaker which was added from Mortal Kombat Deception which came from Killer Instinct. This can only be done only at level two of the Super Bar.
3.) The Super Bar concept was taken from Capcom's fighting games. However the super meter moves more like that of Street Fighter Alpha. You have some enhanced moves which were taken from Street Fighter III.
4.) Character designs. Obviously Sonya Blade copies much of her appearance from Nina Williams and Sarah Bryant. Liu Kang well he's Ryu inspired aside from Bruce Lee inspired. Nightwolf gets it from T. Hawk.