>>13767470There's only 6 games if you want to be technical. As much as BW2 was a 'story sequel' it was a glorified "3rd version".
As for changes:
- Special Attack/Defense Split (Gen 2)
- Gender (Gen 2)
- Hold Items (Gen 2)
- Happiness (Gen 2)
- Forms (Gen 2, but moreso Gen 3/4)
- Physical/Special change (Gen 4)
- Types (Gen 2; Gen 6)
- Double Battles (Gen 3)
- Triple/Rotation Battles (Gen 5)
- Nature (Gen 3)
- Abilities (Gen 3)
- Mega Pokemon (Gen 6)
And more that I can't think of right now.
If you honestly don't know how those added to, affected or changed battles in the games, I don't know what to say.
And ever generation has had 'minigames' of sorts. Be it slots, Voltorb Flip, Musicals, the film studio, the contests, Pokeathlon, etc/whatever.