Very good episode! The best part it follows the story of the CW DC crossover. Let me explain, in the last crossover of it was about multiverses ending.
Here it follows the story god who is on earth 2 (supergirl world) is killing the worlds where all Sam and dean are alive. We suppose it's before the DC crossover. We also learn that's the boys are on OURS earth don't know which one. Earth prime I suppose.
Now they have to save the world, by killing God
The multiverses (just that) and of courses keeping the family business!
So yes it was a awesome episode!!
Review of Galaxy Brain
