A New Addition to the battle system is a capability to use two pokmon in a battle at once. With the unsureness of people about how it works I will try and explain it here. Heres a screen of it in action: ttp://www.serebii.net/pokemon_advance/2on2.jpg So, the attacks will be in order of Speed, Say you have a Bayleef and a Shuckle and your opponent has a Caterpie and an Electrode ttp://www.serebii.net/pokemon_advance/2on2-demo.gif
Say they are on Max Stats for Speed: Bayleef: 218, Shuckle: 108, Caterpie: 188 and Electrode: 378. The battle attacks would be in this order: Electrode, Bayleef, Caterpie, Shuckle. You get to select the Pokmon you get to attack so say you wanted to use Vine Whip as Bayleef, you get to pick if Caterpie or Electrode get hit. However some attacks work on both target pokmon like Surf and Blizzard. It is not yet known if the damage gets halved or not, however it'll be said here when it's known
Multiplayer Battling Luckily, since the GBA can have 4 Players...you can have 4 Player Battling. You each choose 3 Pokmon and use them. It's basically run the same way as a 2 on 2 battle... except you can only control one Pokmon instead of the two. It is one of the options when you decide to battle in the Pokmon Center. Here are a few example Pictures: