神回って英語でなんて言うの？

"A breathtaking episode"
breathtaking = astonishing or awe-inspiring in quality, so as to take one's breath away

"A marvelous episode"
marvelous = Something that is extremely good or pleasing

A fantastic episode
fantastic= extraordinarily good or attractive.

You can also use adjectives such as :
-remarkable
-splendid
-terrific
-outstanding
-phenomenal

'Instalment' is an alternative word for 'episode.' The storyline is the general plot - what is happening and to whom. So in other words, the storyline is the content of the episode.
If it is the words of the actors and the verbal interaction that impresses you, of course, you could say: "That was a superb script!"

The adjective 'fantastic' means 'extraordinarily good or attractive'.
If you enjoyed watching the episode, it means that it must have been a 'mind blowing' one if it was an action movie.

I have added 'mind blowing' to mean 'extremely exciting'.
If you say it was an 'exciting episode', you are in fact saying it excited you a lot.

It was an extremely good episode.
In this case, it might have been a drama or a love movie.

-->You use great to describe something that is important, famous, or exciting.

-->An awesome person or thing is very impressive and often frightening.

-->An episode of something such as a series on radio or television or a story in a magazine is one of the separate parts in which it is broadcast or published.

The final episode will be shown next Sunday.

1.best episode
- this means that you enjoyed a lot an was the best

2. awesome
3. this is also another describing word to describe how much you enjoyed it.

If you need to give a positive review to an episode, you can use these phrases. They both mean the same. Decent means conforming with generally accepted standards of respectable or moral behaviour.