The biggest and greatest feature that it introduced has to be the Battle Frontier. Seven different ways to battle climb up through ranks and fight the Frontier Brain at the 50th battle and 100th battle respectively earns you the medal for that specific zone. So if you're looking to test your Pokemon knowledge and skill match ups, its the perfect place to train. Vince rates this game: 5/5 What Crystal was to Gold and Silver, Emerald is to Ruby and Sapphire.
However, unlike Crystal, Emerald makes some significant alterations to R/S. Unlike in R/S where one of the Team ____ was helping you and the other was your enemy, in Emerald both of them are your enemy.
This leads to some new areas like a volcanic hideout for Team Magma. Replacing the Battle Tower from R/S is the Battle Frontier, a large complex in which one can participate in a variety of battle challenges (including, of course, the Battle Tower). Unless you have a huge attachment to R/S, Emerald will give you the best Hoenn experience.
Game Release Info (NFO): _________________________ ___________ / / / / / +----------/,_______________________./ . ,___________ ... / +.... +--------/ ------- /..,.. _/ ,_'_/:. /. ,_____ .-------, / +-----/ )____:-----+'------/ ) ' ) '--- / ___ _______ / )--, l / ) ' ' /l ___/ )____ / ___/ `_____' ___ /_______/ +-----+-----+____/__ __ + + /' - ) ( / / /( /( ) ) +---------- )/ /( ( ) / ( ) ) / / ) / ( --- + _) 2 0 0 5 (_ + _________/ / ______________ /. / __ p R E S E N T S __:` ( / )/;: /(__________( __ ___ ____ __ )__________) ) / ( / Pokemon Emerald _____/( ________________________________________________ (C) Nintendo )_________________). USA.ORiGiN[-]SUPPLiER.: WeaponX.