I like the part where your chasing Team Magma in Ruby. It's so exciting compared to chasing boring old Team Rocket. And at least Team Magma has a purpose. Team Rocket is stupid how their only goal is to cause havoc.
My favorite part is how to evolved Feebas from Milotic. The reason for that is because it is a new way to evolve a Pokemon andit is also challenging, well to me. It took having five Feebas with the wrong nature until I find the one with the right nature and also have to blend good berries to maximize its beauty or else if I got the wrong berry then it would be not enough to surpass the maximum beauty. Those were the two mistakes I did when I first tried evolving Feebas to Milotic.
Ruby & Sapphire: The start of Hoenn, and I think you have more freedom then in Emerald, but that's doesn't mean they are better then Emerald.
Emerald: I love the Battle Fronteir. It's a really nice gift for trainers. But for someone who doesn't love to battle, or hates hard challenges, then it's not for you. I also love the animations.
The Battle Frontier is great! You should try the Pyramid with a Lv100 Flygon when there's electric pokemon in it. Just ask the woman on the right to the guy that starts your challenge and she tells you when there are electric pokemon in it. You know when she says "she can see paralysis".
Yes, she can also see burn, poison, pressure, and more........
Anyway, my favorite thing in Emerald, is when we battle Maxie and Tabitha together with Steven at Mossdeep Space Center..
5 reasons why should I buy Emerald Version:
1. Cool Double Battles!
2. Teams Aqua and Magma together!!
3. Pokemon Animations!!!
4. Kyogre and Groundon together!!!!
5. Battle Frontier!!!!!
but to follow the rules and answer your question I would say:
Contests
battle frontier
both groudon and kyogre
rematches with gym leaders
beating my freinds every time they try to beat me.I mean the link battles.