I've had multiple dreams of halo. The one I had last night was the flood infecting everyone and there was no way to stop it. Another dream I had, I was commanding multiple UNSC and Covenent ships and mistakenly got everyone killed. Before that I had one were earth had a nuclear winter and I was hiding with the resistance while Elites patrolled the area killing people.
I've had many more which I can't remember too.
The final one was I got ahold of UNSC, forerunner and Covenent tech and was showing off to all the girls and my freinds at school then accidentally broke my suit when terrorists came.