Challenge Cup (also known as CC) is a metagame where both trainers receive a random set of 6 unique Pokémon. The IVs, EVs, moves and held items are all randomly generated. The levels of Pokémon are balanced to provide fairness. It is a tier which is designed to test your battling skill using what you have.
 Types of Moves in Challenge Cup
There is at least 1 attacking move provided on each moveset.
- (Nearly) Useless Moves: Splash, Snore etc. If you get these moves on a moveset, don't use them.
- Not very useful moves: Pound on Blissey, Incinerate on Cleffa etc. These shouldn't really be used unless they are the only attacking moves on the set.
- Powerful Moves: Fire Blast on Reshiram, Psycho Boost on Deoxys-A etc. These should be used whenever it is possible.
- Status Moves: Spore, Toxic etc. Since there is no Sleep Clause in Challenge Cup, use your sleep move whenever possible.
- Boosting Moves: Swords Dance, Shell Smash etc. Check your moveset before using them to make sure it's actually useful.
- Recovery Moves: Some of the best moves in CC overall.
 Differences between normal play and Challenge Cup
Since you have no control over what moves your Pokémon get, you have to develop a new strategy each time you play. In Challenge Cup, moves such as Secret Power are much better than in normal play, because it deals consistent damage and has a chance to paralyze. Hyper Beam and its variations are also more useful, as it is unlikely that a Pokémon can take advantage of the turn to sweep your entire team.
 Types of Items in Challenge Cup
Berries are generally good items in CC, as they can heal your Pokémon. They are also useful in case Natural Gift is on the moveset.
Choice items can either be good or bad. Be aware that you will only be able to use one move, limiting your versatility.
 Power Items
Power Items, as well as Macho Brace and Iron Ball reduce speed by 50%. They are not very useful at all.
 Plates/Type Boosters
These only become useful in certain situations. The 20% boost does help a bit.
 Harmful Items
Flame Orb/Toxic Orb/Black Sludge/Sticky Barb. Not very useful unless you have Fling or Trick.
 Strategies in Challenge Cup
- Always pay attention to your Pokémon's held item. You don't want to use a bad move, only to realize you are stuck in that move because you have a Choice Band.
- Pay attention to your movesets. Just because you get Kyogre or something similar doesn't necessarily mean the moveset is good.
- Know approximately how much damage a move will cause. Remember to take type resistances/weaknesses and STAB into account.
- Know your Pokémon's stats. It's no use using Flamethrower off 46 Special Attack when you can use Flame Charge off 225 Attack.
- Approximate you opponent's stats. Against a Blissey, for example, you are better off using physical than special moves most of the time.
- Know your team. Find out which Pokémon can take the opponent's attacks.
- Be creative with your strategy. Challenge Cup often forces the use of creative strategies.
 Variants of Challenge Cup
 CC 1v1
This tier is the same as Challenge Cup, but participants get 1 Pokémon instead of 6.
 Wifi CC 1v1
Wifi CC 1v1 follows the same rules as CC 1v1, but allows players to select one Pokémon from the six they have. Wifi CC 1v1 requires Wifi Clause in addition to the standard clauses for CC 1v1.