What if the boar ran away and Robert learned the truth?

[Equilibrium]

They would have to return to KL for more wine?

[Dimples]

The Dornish didn't like Robert either...Oberyn said he would crown Viserys...

The Dornish didn't like Robert because of what the Lannisters did in his name.

[Irish]

Let's think about this.

Cercei knew that Jon Arryn and Ned Stark were investigating the true parentage of her children and eventually discovered that she screwed her twin brother behind King Robert's back. So shortly before Ned confronted her, she came up with the idea of convincing her cousin (whom she's also be screwing) to give Robert a strong wine so that he'll be killed while hunting.

What if the boar didn't kill Robert?

What if it had ran away or missed and Robert wasn't mortally wounded? What was Cercei's plan then? It appears as though Cercei's plan relied on Robert dying so that she could secure Joffrey's place on the throne (With convenient and timely help from Baelish). But if King Robert doesn't die, then she's stuck in place.

So lets say that Robert comes back from his hunt, pissed about missing a prize boar and unaware of his wife's clumsy plan to kill him. Then his noble and honorable Foster brother and Hand of the King, a man who has never been untrue or lied, informs him that his kids are born from incest based on strong evidence from genealogical books, Cercei's own confession to Ned, and how Robert's bastards are the splitting image of his youth yet his own children look nothing like him.

What would he do to Cercei and the children? That's kind of obvious though there's a chance that Ned would persuade him otherwise. For instance, allow Joffrey to still inherit Casterly Rock since he's heir to Lannister lands.

Who would succeed him in place of Joffrey? Would he inform Stannis that he is the true heir or legitimize one of his bastards like Edric or Gendry?

How would he deal with the rest of the Lannisters? Does he kill Jamie and strip Tywin of all lands and join the Crown's forces to those of Tully and Stark?

What would Baelish do to ensure that chaos still stirs? Secretly poison Robert amidst his attempts to regain control of his court? Implicate the Barratheons against the Starks?

Well, I would assume that Robert would have had her and Jaime's heads, as well as the bastards. He was willing to kill Dany/Viserys, what do you think he'd do to someone who made a fool out of him? Tywin would probably rise up, but I don't think anyone would really have the power to stop the Stormlands, Riverlands and North. Even the Tyrellanister alliance would have a hard time trying to stop them.

[LordQorgyle]

That depends...The Reach and Westerlands could very well beat those three kingdoms since they have the 2 biggest armies, the biggest fleet and are the two richer kingdoms..they could very well hire one or two companies of sellswords

[Sword of the Morgan]

If the boar doesn't kill him, I'm not sure Cersei is able to find out until they return from the hunt. By that time it's too late. I think Robert calls for Cersei and Jaime's heads, and Ned convinces him to allow the children to be exiled. I have no idea how this plays out with Tywin, though. Jaime's death would really hit him hard.

[Dimples]

That depends...The Reach and Westerlands could very well beat those three kingdoms since they have the 2 biggest armies, the biggest fleet and are the two richer kingdoms..they could very well hire one or two companies of sellswords

It's possible that the Reach and the Westerlands could beat the North, the Riverlands, the Vale, the Stormlands, and the Crownlands, but the odds wouldn't favor them. Most importantly, in this scenario the Tyrells have no reason to shack up with the Lannisters.

[SacredOrderOfGreenMen]

MOAR WAR

[JonSnow4President]

It's possible that the Reach and the Westerlands could beat the North, the Riverlands, the Vale, the Stormlands, and the Crownlands, but the odds wouldn't favor them. Most importantly, in this scenario the Tyrells have no reason to shack up with the Lannisters.

However, if they want Margarey to be a queen, there is now a vacancy at the position.

[Salafi Stannis]

IIRC, Varys said if the boar failed to kill him, then something else would, maybe he'd fall from his horse while drunk or something like that.

[Bright Blue Eyes]

If the boar didn't kill Robert, something (or someone) would have killed him instead. Too much hangs for too many people on Robert dying via convenient accident, and AGOT Cersei (in marked contrast to how she is later written) is no fool. Gambling everything on a single throw of the dice is not enough: there are plenty of ways to organise a hunting accident, and the boar is just one of them.

She very much is!

Fucking in Winterfell? Foolish.

Fucking in Darry? Foolish.

Demanding Jaime to kill Arya? Foolish.

It's straight up her alley.

IIRC, Varys said if the boar failed to kill him, then something else would, maybe he'd fall from his horse while drunk or something like that.

Yes, and Varys loves insuniating things without strictly lying.

Who and how would kill Robert? Could kill Robert.

[LordQorgyle]

There were many ways...he could fall from a horse, falling in a ambush...and he is not exactly in his prime...

[kimim]

First, Ned's unsubtle investigation forces Cersei to assassinate Robert earlier than she would have--at least this is what she says in FoC.

Had Ned kept his investigation a secret, and had Robert lived to hear the tale from Ned:

1. Robert kills Cersei, Joffrey, Myrcella, and Tommen immediately. They're all products of incest, hence abominations. Alive, even on the Wall, they're a threat, as they are heirs to the throne. This is why Ned warns Cersei: He knows his friend.

2. Robert would publicize the incest to isolate the Lannisters.

3. The Baratheon brothers would unite.

4. I don't see the Tyrells joining Lannisters, as they have no reason to join the weaker side. Robert would likely marry Margaery.

5. Tywin, Jaime are away and temporarily safe. However, they are also isolated, without allies. I could see a united front of Baratheons and everyone else going after Casterly Rock. They need the gold, and they would probably succeed in taking it. Lannisters would be wiped out.

6. Varys is the wild card, as his plans do not involve a Westeros united under a Baratheon. He could attempt to disprove what Ned tells the king. He's the only one who could succeed, given his reputation for knowing secrets.

7. LF's plans don't need to change. He could easily marry Lysa, war or peace. He could as easily kill her, declare lordship. At that point, he'd be in a position to ask for Sansa's hand. He'd probably get it.

Once Robert is convinced, the story stops.

[Bright Blue Eyes]

There were many ways...he could fall from a horse, falling in a ambush...and he is not exactly in his prime...

...or he could have a stroke.

But that's just dumb luck, Cersei is not in the position to arrange any of that.

[LordQorgyle]

First, Ned's unsubtle investigation forces Cersei to assassinate Robert earlier than she would have--at least this is what she says in FoC.

Had Ned kept his investigation a secret, and had Robert lived to hear the tale from Ned:

1. Robert kills Cersei, Joffrey, Myrcella, and Tommen immediately. They're all products of incest, hence abominations. Alive, even on the Wall, they're a threat, as they are heirs to the throne. This is why Ned warns Cersei: He knows his friend.

2. Robert would publicize the incest to isolate the Lannisters.

3. The Baratheon brothers would unite.

4. I don't see the Tyrells joining Lannisters, as they have no reason to join the weaker side. Robert would likely marry Margaery.

5. Tywin, Jaime are away and temporarily safe. However, they are also isolated, without allies. I could see a united front of Baratheons and everyone else going after Casterly Rock. They need the gold, and they would probably succeed in taking it. Lannisters would be wiped out.

6. Varys is the wild card, as his plans do not involve a Westeros united under a Baratheon. He could attempt to disprove what Ned tells the king. He's the only one who could succeed, given his reputation for knowing secrets.

7. LF's plans don't need to change. He could easily marry Lysa, war or peace. He could as easily kill her, declare lordship. At that point, he'd be in a position to ask for Sansa's hand. He'd probably get it.

Once Robert is convinced, the story stops.

Ned would never marry his daughter with a guy like LF..

Sansa would probably marry Renly or Willas

[Lonin]

Cersei and Jaime deny the charges. Demand trial by combat.

Cersei has the Hound and enough Lannister guards to protect her while she denies the charges and demands a trial.

Even in r/l it's often claimed (conveniently which everyone realizes) the Queens children are not the Kings - not everyone will believe the charges.

[Robert Bruce]

Why would Tywin kill Joffrey?

And what about Myrcella and Tommen?

Tywin may well kill all of them because they are not legitimate Lannisters, and they are "abominations born of incest" that bring shame and serious problems to House Lannister. True, I doubt Tywin would do it himself but he would disown Jaime and Cersei. I doubt he would have any problems with the three children's death

[Pod The Impaler]

MOAR WAR

This is the only certain answer.

[kimim]

Ned would never marry his daughter with a guy like LF..

Sansa would probably marry Renly or Willas

True, LF is slimy. However, he's also very able. He would be able to change his focus quickly; unlike Varys, as he has no cause but himself. He could feasibly become powerful enough to win Sansa. Those are all wild guesses, btw.

This is the only certain answer.

I'm not sure. If Robert kills off Cersei and her brood, then there could be peace in Westeros. There'd be no Stannis-Renly split. Ironmen would likely stay put, as the North would not be vulnerable. With Tywin's fall, Dorne would be done with its revenge, so, again, no war. Tywin and Jaime could make a stand, but they have no allies. There could be war there, but short lived.

At that point, we would be looking at a united kingdom, with Dany or Others as antagonists.

[LordQorgyle]

True, LF is slimy. However, he's also very able. He would be able to change his focus quickly; unlike Varys, as he has no cause but himself. He could feasibly become powerful enough to win Sansa. Those are all wild guesses, btw.

I'm not sure. If Robert kills off Cersei and her brood, then there could be peace in Westeros. There'd be no Stannis-Renly split. Ironmen would likely stay put, as the North would not be vulnerable. With Tywin's fall, Dorne would be done with its revenge, so, again, no war. Tywin and Jaime could make a stand, but they have no allies. There could be war there, but short lived.

At that point, we would be looking at a united kingdom, with Dany or Others as antagonists.

No simply because LF only received Harrenhall because of the Lannisters, and without Harrenhall he could never marry Lysa..And let's not forget that he only killed Lysa at that time because she was going to kill Sansa

[Ser Arthur Hightower]

Cersei would have tried to put Net into a bad light, saying evil things on his regard. Robert would have not suffered it and hit her hard.

Then, who knows? Robert's reign still needed Lannisters' support to go on. He has gone with too many whores to play the victim, the just being betrayed.

He would have probably asked for Jamie Lannister to be judged by a trial, but I don't see him executing Cersei nor his own fake children. Sending her back to CR would have been stupid, she could play the hostage part in KL, but in the spirit of Robert's character. Who knows? Maybe he has known all along, and tried to drunk this knowledge into wine since a long time. IMHO he would have done perfectly nothing relevant, except boasting.

And as we know, the house that Targaryens hate more than any other house in westeros for good reason would sit back and let Robert be overthrown just out of spite.