Main Topic:

• Competitive battling
  
  
  
  • The 3 most popular types of battling are:
    
    
    
    • VGC - Doubles - the official pro format supported by Pokemon Company. Players bring 6, choose 4, and battle with 2 pokemon on the field at a time.
    
    
    • Battle Spot Singles (BSS) - the most common online format played on the cartridge. Players bring 6 and choose 3.
    
    
    • Smogon Singles (commonly played on Pokemon Showdown Simulator and in Cartridge) Players bring 6, play with all 6, and battle with 1 pokemon at a time.