Originally Posted by Fat shockwave527
Gen 2: New Types, (not effecting battles) Day and Night
Gen 3: Weather, Special Attack and Defense, Abilities, Double Battles
Gen 4: Special/Physical split so that special/physical was not type based
Gen 5: Dream world, triple and rotation battles, (and not effecting battles) seasons
I'd say the gen 3 and gen 4 were pretty big changes
Wrong, wrong, wrong.
Weathers, Special Split, Items started in Gen 2.
Gen 3 only add Abilities & Double battles (and Choice Band)