Here is my suggestion...

No story line. Cancel it. It is not needed. This is not an RPG.

Concentrate on the gamplay instead.

Ok, well you know that isn't going to happen, so it's time we just accept this game, whether we hate it or not.

In my opinion, the story should be kept very simple and clear-cut. Not only would that allow more focus to go to gameplay, but it would prevent causing trouble with continuity. I think the goal for something like this is so anyone, whether they're a DC fan or MK fan, can follow the story without getting lost.

Something like...
Mileena forges an alliance with the sorceress Circe, who uses her magic to fix her deformed face and together, they take control of Edenia. Kitana seeks out Circe's enemy Wonder Woman...hoping to use her Lasso of Truth to reveal Mileena's deception, then defeat her & Circe and save Edenia.

Simple, straight-forward, beginning-middle-end...yet enough room to allow some side weirdness to happen.

I think the story should be like this:


Something cataclysmic happens and if you are a DC character, you take on the perspective of an DC character being invaded by the MK world and vice versa.


All hell breaks loose and people fight about it.


In the end, everyone that said they would boycott this game will still buy it and inevitably complain about the next installment because it isn't another MK, or MK2.


fin

I think it would either have to do with the end of Armageddon or the One Being, or all of that Infinite Crisis on Infinite whatevers BS that occurred somewhat recently in DC comics.

Cool story would be:

Outworld has come to earth, and the mortal characters are taking an ass woopin, so DC heroes have to step in to help out. Soon they realize that the DC villains are in cahoots with the Outworld MK villains...

Lui Kang, Batman, Superman, Raiden and the gang team up to take on

Shao Kahn, Darkseid, Joker and Shang Tsung (and the other baddies)

this

I would wager that they explain it that when Blaze was defeated something unexpected happens and ends up fusing the two universes together. Through the destruction and confusion of the process some very bad people on both sides see an opportunity to capitalize and form some kind of ultra-powerful alliance.

Naturally others band together to defeat this alliance. The good characters, neutral characters, and weaker "evil" characters end up joining up due to the greater threat presenting itself.

It's clear, simple, and allows for extra creativity with who is with who. The characters may not like each other but they have no choice but to work together.

Like a strange mix of MK3 and Deadly Alliance.

KITANA:

I awoke laying in a pool of blood. The stinch of death filled the air as screams and roars continued to erupt from the wounded. After a few minutes, I rose up and looked down to see the body of Mileena. She had one of my fans lodged in to her face that had split it open. I felt a twinge of victory course through my veins as I realized my long time enemy was finally dead. I looked around the battle field, hoping to see any of my conrades still alive. As I gave the battle field a glance I saw figures standing on top of the pyramid where the warrior Taven had defeated Blaze. The figures seemed to be studying the countless bodies that lay strewn all over the battle field. I squinted my eyes as the sun began to block my glare, I had to get a better look at these strange people, but before I could attempt to get a closer look, some one grabbed me from behind......


A strange woman in a black leather suit began to scratch me across the face with her overly long finger nails. I couldn't fight back, I was weak from the earlier battle. I began to bleed more and more and as I did so, the cat like woman continued to laugh in a state of euphoria. She then tied my hands behing my back and began to march me towards the pyramid.

Once we reached the bottom of the pyramid, I gasped at the body of Taven that lay on the parched, dry ground. I looked up and saw Kahn, standing at the very top of the pyramid with three of the mysterious people. Kahn was obviously hurt and wounded from the earlier battle. One of the odd looking people, who looked like some type of Jester or clown, handed Kahn a bottle of green liquid which he drunk. Kahn's eyes began to glow bright green as he seemed to recover from his wounds....

Thats pretty good except one thing you really really like catwoman don't ya but to each their own my two characters are alerdy in it Sub and Batman

@IamtheS

The 80s are recent?

that was pretty good professor...you shoud write some more!

Um... no. I was referring to whatever the deuce that just occured before 52 and One Year Later. I don't know the name of it, I haven't followed Marvel or DC since Superman's return after being killed by Doomsday.

The way I see it (I'm totally ignoring the 20 characters thing, /s mean or)

I say we see the merger and the explanation for why it happened. We get to witness and play a few rough first encounters, then fast forward a few months.

In a Gotham merged with parts of MK Earthrealm Batman, Nightwing/Robin (Tim Drake), and the Flash (Wally West) are working with the OiA , Jax and Cyrax (Sonya is doing something else at the time) and the Lin Kuei (just Sub-Z and a bunch of generics) to fight against Sektor, Grodd, and the Tekunin on one front and Noob, Smoke, Bane, and the Cyber Demons on the other.

Kano and the Black Dragon have employed Solomon Grundy. Sonya, Johnny Cage, Green Arrow, and Hawkman/Hawk Girl/Black Canary are dealing with them.

Selina Kyle, in another part of the Earth/Earthrealm fusion, is attempting to steal something valuable that once belonged to the Shirai Ryu, this does not please Scorpion.

Quan Chi is pursuing a magical artifact in Kahndaq, killing anyone who gets in his way, drawing the wrath of Black Adam.

Similarly Shang Tsung is stealing the souls of the citizenry of Fawcett City, inciting Captain Marvel into action.

In Outworld, Lobo has been hired by the centaurs to take out prince Goro.

Darkseid, believing that the Anti-Life equation lies in Outworld, allies himself with Shao Kahn. Behind Shao Kahn's back, he has also allied with Raiden. Raiden intends to betray Darkseid if the Anti-Life equation is found. Under their command are Reptile, Barraka, and Barraka's hordes. Sinestro has also allied himself with Shao Kahn and Darkseid.

Metropolis, Themyiscara, the Watch Tower, and even parts of Oa have been drawn into Outworld, and Superman, Wonder Woman, Martian Manhunter, and Green Lantern (Hal Jordan or John Stewart) fight to defend them from threats such as Tarkatan hordes. That is, until the OiA and Batman are able to reestablish a portal between Earthrealm and Outworld. The four heroes head out to stop the alliance. Meanwhile, in Metropolis, Joker does some crazy crap that needs to be stopped.

SM,WW,MM, and GL, while roaming Outworld are eventually blindsided by Doomsday. The weakened Superman and the others are able to hold their own, but aren't quite capable of winning. The group is eventually saved by the aid of Kitana, Kung Lao, and a restored Liu Kang. After beating Doomsday this group heads off to defeat Shao Kahn, Darkseid, and Raiden (in that order).

Thanks guys. I'll post more soon.

Ok I think it should go like this:

We see Sub-Zero at the top of the pyramid and the dead body of Blaze right behind him. Sub-Zero looks down and the only thing he sees is dead bodies all over the place and the only thing he hears are the screams from the fallen warriors. As he starts making his way down the Pyramid a he hears a strange voice saying:"Finally....It Is Done"! Then he looks up the sky and sees meteors falling around him and tries to get some cover...

When he gets up he realizes that some kind of parallel universe has merged with the MK universe. He looks down again and he is surprised to see that Liu Kang, Johnny Cage, Kung Lao and Sonya came back to life after this Cataclysmic event. As the 5 of them reach the ground they are trying to realize what's happening and suddenly a terrible laugh is heard. The 5 heroes turn around and they see Shao Kahn, Shang Tsung, Scorpion and Goro along with some Clown like guy, a short man with an umbrella at his hand and a Cat like woman at the top of the pyramid starring down at them.

Shang Tsung throws an energy ball at the defenseless warriors when out of nowhere a green shield appears and saves them. As Johnny Cage looks in the sky he sees a man in a green and black uniform along with a a man with a dark blue uniform with a big silver "S" in his chest and another one who looked like a bat. The 3 saviours get to the ground and introduce themselves as the Justice League (Green Lantern,Superman,and Batman).
Superman: We are the Justice League we are here to save you

Sub-Zero: We need no saviours...now get your clowns and get lost

Batman: Look pal...you want to die? fine...stay here and do it...You want to live? Come with us..it's that simple...

Johnny Cage: The Ice man here is right....we need no saviours...we can handle it, like we did before right Liu?

Liu Kang: I think that they are trying to help. We don't know who we are fighting against anymore!

Kung Lao:Yes...I think Liu is right...We fought each other to death! We came back from the dead and now we are fighting someone we don't even know.

Sonya: Liu and Kang Lao are right...we must follow them

end of part 1

The forces of evil of the DC and MK worlds have joined forces to take over and eventually plumme the realm of Earth into a state of hellish chaos, pain and brutality. Superman saves the day! The end!