My favourite generation is the one I have nostalgia for and the first one i played, Gen 3
Ruby and Sapphire i think had really good pokemon designs especially my favourite legendary Groudon, he looked metal as fuck on my copy of Ruby. I enjoyed the soundtrack from the GBA version and matched the anime based from it, Pokemon Advance.
What is your favourite generation and why? What details makes it stand out for you?
Gen 2, Crystal. Was my favourite. I found the character selection and graphical upgrade was really nice. Gen 2 includes the previous game world. Collecting all the badges again was special.
But I played Gen 1, Blue the most. The missingno trick was a bunch of fun and it was my first gameboy game.
Edit: my friend said Soul Silver is peak and sun/moon is a close 2nd place.
I liked the music so much. It’s got a real atmosphere while every generation after got more and more generic. 3 is pretty okay.