Pokemon breeding Hold items (Things that have use in battle) Abilities (each Pokemon has one) Special Defense Physical/special split A LOT of new Pokemon Dark and Steel types New ways to evolve People realizing that they can customize Pokemon by breeding them or battling with them right. (The second part has been around since gen 1, but nobody ever noticed it.) and lots of little things.
Storywise? Black and White have the best story in the series. It still isn't super deep or anything, but it's a simple but enjoyable story that has some actual moral ambiguity. For once, everything isn't black and white.
I recommend you just jump right in without worrying too much. The game is pretty good with teaching the basics.
Not changing this until something impossible happens Started 12/02/12
Lets see... there are two new types (Dark and Steel), pokemon now have abilities, the stat mechanics are different, physical and special attacks are no longer based on their type, and there os a new stat called "special defence".
Since Red and Blue? lots of evil organizations have been thwarted by 10 year olds... the games are all but stand-alone, so you will not really need to worry about missed story.
There are still random battles, however, using repels has become more convienient. There is no voice acting, and the protagonist basically only ever says yes/no. The storyline has improved quite a bit since R/B, but it still has room for improvement.
Me: my posts, now with 100% more signature Hades: I liked it better when your posts had 100% less signature...