BlowoverKing on 16 June 2013
You don't NEED to play both but I think everyone should. B/W are a bit linear region-wise and you are only able to use gen 5 pokemon. B/W 2 are better games but the originals are really good too, I actually like the fact that B/W forces me to use different pokemon.
If you can get both, if only one or the other, B/W 2.
