gen 4. i loooooove it. i might be biased bc it was one of my first pokemon games but i just..i love it.
i love the look of the gameplay. i really like the DS era of pokemon the best.
i love the sinnoh region and colder weather.
i love the trainers designs, especially dawn she is my all time fav. (and esppeeecially her platinum outfit bc i just love the coat and scarf it´s just so cute. again, i like cold weather aesthetically)
legendaries are neat. they are not my favorite i have to admit but i still like them a lot and i LOVE giratina so so much.
cynthia is a great champion and i had a girl crush on her as a kid. she kicked my ass so many times too ( i didn´t know how to make good pokemon teams back then too...)
the starters are nice!! i love piplup. he´s my second fav starter after snivy.
story wasn´t bad.
the diamond and pearl anime is ELITE it got me way more into pokemon than i was before.
i gotta admit i felt like the game was a tad bit slow but i don´t mind it, pokemon games are fast to playthrough anyways.
overall sinnoh just has a special place in my heart. I also really love gen 3 and gen 5 a lot.