Raids in Pokémon GO require teamwork from all nearby players to bring down powerful Pokémon known as Raid Bosses.

Not only do these battles provide exclusive rewards, but they're also a reliable method of grabbing Pokémon that you don't see very often, like Legendary Pokémon.

In this guide, we'll go through exactly how Raids work and list all of the 

Pokémon GO - How Raids Work

You must be at least trainer level five and own a Raid Pass to join a Raid. You can grab one of these daily by visiting a gym, or by purchasing one from within the game for 100 PokéCoins.

When a raid is about to begin, a large egg will appear over a nearby Gym, along with a counter. Once that counter reaches zero, the Raid Boss will be revealed and it's time to make your way to the Gym.

Once there, redeem your Raid Pass and you'll enter a lobby where you can join a team made up of nearby players. This is also the time to pick your party of Pokémon, and ideally you pick those that will counter that particular Raid Boss. 

Once you're all happy, the Raid will begin and you'll have five minutes to defeat the Raid Boss and reap the rewards. Raids play very similarly to Gym Battles, with you tapping to pull off your Pokémon's variety of moves.

Don't worry if you fail on your first attempt though. Once a Raid Pass is redeemed, you have an hour to try and defeat the Raid Boss. Fail and you can tweak your Pokémon and start all over again as many times as you want until that hour is up.

Pokémon GO - Raid Rewards

Beat a Raid Boss and you get a chance to catch it. This chance varies depending on the Boss, and can be as high as 70% or as low as 2%.

You can't use your regular Poké Balls though. Instead, you'll receive a bunch of Premier Balls based on different variables:

Action Number of Poké Balls Received
Defeat Raid Boss 5
Deal Damage 1 - 3
Team Damage 1 - 3
Gym Control 0 - 2
Friendship Level 0 - 4

You also get a bunch of other goodies, like Rare Candies, Golden Razz Berries, and TMs.

Pokémon GO - Raid Boss Tiers

There are five different tiers of Raid Boss in Pokémon GO, and each tier denotes the difficulty. Here's a handy chart to help break it all down.

Tier Egg Number of Players
1 Pink Can complete solo.
2 Pink Can complete solo.
3 Yellow Can complete with a small group of around five players.
4 Yellow Can complete with a small group of around five players.
5 Legendary Requires a large group of around 10-15 players.
EX Ex Raid Boss Requires a large group of around 10-15 players.

Pokémon GO - EX Raids

EX Raids are the most difficult type of Raid Battle in Pokémon GO – so tough, in fact, that they're invite only. You have to grab an EX Raid Pass that details when and where the EX raid will take place.

To earn an EX Raid Pass, you have to Raid often and level up your Gym Badges to max level. Right now, there's only one EX Raid Boss in Pokémon GO - MewTwo.

Pokémon GO - Raid Bosses

Tier One Raid Bosses

Appearance Raid Boss Boss CP Min Captured CP Max Captured CP Capture Rate
Magikarp 1,165 104 125 70%
Wailmer 3,369 756 814 50%
Makuhita 2,319 386 426 50%
Meditite 2,516 285 317 50%

Tier Two Raid Bosses

Appearance Raid Boss Boss CP Min Captured CP Max Captured CP Capture Rate
Roselia 10,887 922 982 30%
Kirlia 6,005 440 481 10%
Mawile 9,403 793 848 50%
Alolan Exeggutor 13,671 1,570 1,646 20%

Tier Three Raid Bosses

Appearance Raid Boss Boss CP Min Captured CP Max Captured CP Capture Rate
Machamp 18,144 1,574 1,650 10%
Tangela 16,085 1,195 1,262 40%
Piloswine 13,663 1,237 1,305 12.5%
Donphan 18,980 1,649 1,727 12.5%
Alolan Raichu 16,178 1,158 1,224 10%

Tier Four Raid Bosses

Appearance Raid Boss Boss CP Min Captured CP Max Captured CP Capture Rate
Rhydon 30,512 1,804 1,886 5%
Tyranitar 34,707 2,011 2,097 5%
Absol 26,262 1,232 1,303 50%
Alolan Marowak 20,190 908 966 15%

Tier Five Raid Bosses

Appearance Raid Boss Boss CP Min Captured CP Max Captured CP Capture Rate
Mewtwo 49,430 2,184 2,275 6%
Regirock 41,777 1,682 1,764 2%