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human
[Star Wars] What if Windu killed Palpatine then Anakin killed him?

So lets say Anakin didnt make it time and Windu killed Palpatine then Anakin kills Windu for taking away what he believed could save his wife. What happens next?
gpt
The biggest, most immediate impact of this would be that Order 66 would not have been executed.  With Palpatine dead and Anakin unaware of the plan, the Jedi Order would be safe from the biggest immediate threat. With Dooku, Grievous, and Palpatine taken out, the war would wrap up quickly in any case.

As for Anakin, killing Windu is a big, fat step towards darkness.  And one that it might not be possible to come back from.  But without Palpatine promising to save his wife to tether him to the Dark Side, his resolve might not last.  And without the power of the Republic's army and Senate behind him, Anakin wouldn't be able to lead a new Empire as Palpatine planned to do, especially with the Jedi Order still alive and ready to stand against him if he tried.

Best guess?  Anakin would flee, maybe to plot against the Jedi, maybe just to stew in his darkness.  Obi-Wan would be sent to find him and might succeed.  But in any case, it seems likely that Padme would give birth without Anakin by her side.  And that might be something he could sense. 

And if she survived (which she might do without Anakin choking her or any of the Sidious lifestealing conspiracy theories taking place), the knowledge that his visions hadn't come true, that his wife and children had all survived, might be enough to bring him back.  He would turn himself in to the judgement of the Council.