Twilight Trails GO Battle League (2026): Everything You Need to Know

The Twilight Trails GO Battle League update brings a new perspective to the competitive Pokémon GO landscape. Set to kick off on Tuesday, September 8, 2026, at 1:00 p.m. PDT (GMT −7), this season brings massive meta-shaking updates, including the historic introduction of Mega-Evolved Pokémon to competitive formats, a full schedule of rotating specialty cups, exclusive avatar items inspired by Paldea’s Montenevera Gym Leader, Ryme, and a sweeping list of move balance changes and additions.

Whether you are aiming for Legend rank or just looking to stack up your Stardust reserves, here is a comprehensive breakdown of everything coming during the Twilight Trails‘ GO Battle League season.

Table of Contents

Twilight Trails GO Battle League: Mega Evolution Arrives

For the first time ever, Mega-Evolved Pokémon are officially stepping into the competitive arena. Following the sudden emergence of Mega Chesnaught, Mega Delphox, and Mega Greninja, Scopely Explore is integrating Megas into the GO Battle League starting this season and continuing into the future.

Additional Charged Attacks: Beginning with the Mega Finale, certain eligible Mega-Evolved Pokémon will gain access to an additional Charged Attack regardless of their current Mega Level.
Temporary CP Scaling: In the near future, the CP of Mega-Evolved Pokémon will automatically and temporarily scale down so they can seamlessly participate in the Great League: Mega Edition and Ultra League: Mega Edition. The CP reduction lasts only for the duration of the match and reverts immediately afterward.
Championship Series Debut: In a landmark move for competitive play, Mega-Evolved Pokémon will also be legal for the first time in the Pokémon GO Championship Series at the 2026 Pokémon Latin America International Championships.

Twilight Trails GO Battle League Season Schedule & Specialty Cups

The Twilight Trails season features a packed rotation of leagues and unique limited-format cups. All rotations start and end Tuesdays at 1:00 p.m. PDT.

September 8 – September 15
- - Great League: Mega Edition
  - Ultra League: Mega Edition
  - Master League: Mega Edition
September 15 – September 22
- - Great League
  - Ultra League: Mega Edition
  - Willpower Cup: Great League Edition (Fighting-, Psychic-, and Dark-types only; Gardevoir, Zorua, and Zoroark banned)
September 22 – September 29
- - Ultra League
  - Master League: Mega Edition
  - Retro Cup: Great League Edition (Dark-, Steel-, and Fairy-types banned; 4× Stardust from win rewards)
September 29 – October 6
- - Master League
  - Mega Color Cup: Great League Edition (Grass-, Fire-, Water-, and Electric-types only; 4× Stardust)
October 6 – October 13
- - Great League: Mega Edition
  - Ultra League: Mega Edition
  - Master League: Mega Edition
October 13 – October 20
- - Great League
  - Ultra League: Mega Edition,
  - Little Cup (500 CP limit, strictly first-stage unevolved Pokémon)
October 20 – October 27
- - Ultra League
  - Master League: Mega Edition
  - Fantasy Cup: Great League Edition (Dragon-, Steel-, and Fairy-types only)
October 27 – November 3
- - Master League
  - Mega Halloween Cup: Great League Edition (Bug-, Poison-, Ghost-, Dark-, and Fairy-types only)
November 3 – November 10
- - Great League: Mega Edition
  - Ultra League: Mega Edition
  - Master League: Mega Edition
November 10 – November 17
- - Great League
  - Ultra League: Mega Edition
  - 2026 GO LAIC Cup (Fire-, Dark-, Steel-, Fairy-types, Legendaries, Mythicals, and Ultra Beasts banned, along with specific Pokémon like Chansey, Snorlax, Medicham, Altaria, and Annihilape)
November 17 – November 24
- - Ultra League
  - Master League: Mega Edition
  - 2026 GO LAIC Cup
November 24 – December 1
- - Master League
  - Mega Catch Cup: Great League Edition (Only Pokémon caught during the Twilight Trails season; Mythicals banned; 4× Stardust)

Twilight Trails GO Battle League Thursdays

Grinding for resources has never been more lucrative. Throughout Twilight Trails, GO Battle Thursdays return every Thursday from 12:00 a.m. to 11:59 p.m. local time. During these days, players will enjoy up to 4× Stardust from win rewards, and the maximum daily set limit will jump from 5 to 10 sets, allowing for a massive total of 50 battles a day.

Additionally, a free GO Battle League Timed Research Pass will be available in the in-game shop. As you rack up victories, subsequent research pages will require 100 battles and 50 wins to unlock rewarding items like Stardust, Rare Candy XL, and both Elite Fast and Elite Charged TMs.

Twilight Trails GO Battle League Exclusive Rewards & Avatar Items

Rank-up and standard reward pools are getting major refreshes. Guaranteed rank-up encounter rewards feature rare finds like Toxtricity (Low Key Form), Dondozo, Kingdra, Duraludon, and Pikachu Libre, with shiny variations available for the lucky ones. Standard encounters include Vulpix, Bellsprout, Inkay, Mareanie, Honedge, Mimikyu, Morpeko, and surprise Legendary encounters.

Fashion-forward trainers can also unlock Ryme-inspired cosmetic items from the Paldea region:

Rank 10: Shoes inspired by Ryme
Rank 15: Cap and earrings inspired by Ryme
Rank 20: Outfit inspired by Ryme
Legend Rank: Pose inspired by Ryme

Twilight Trails Season’s GO Battle League Major Move Balances

Scopely Explore is adjusting numerous attacks to shake up damage outputs and energy generation. Notable trainer battle adjustments include:

Flying-type attacks

Air Cutter: Increased to 60 power (up from 45), with an increased energy cost (from 35 to 40). It now has a 12.5% chance to increase the the user’s attack by one stage.

Ground-type attacks

Bulldoze: Boosted to 80 power (up from 45) with a guaranteed defense drop on the opponent, though energy cost is increased (from 45 to 55).
Sand Tomb: Boosted to 55 power (up from 40), though energy cost is increased (from 40 to 45).
High Horsepower: Energy cost is decreased from 60 to 55.

Normal-type attacks

Body Slam: Boosted to 65 power (up from 55), though energy cost is increased (35 to 40).
Take Down: Increased to 14 power (up from 5), though energy generation is increased (from 8 to 9).
Scratch: Decreased to 3 power (up from 4), though energy generation is increased from 2 to 4.

Water-type attacks

Brine: Major buff to 100 power (up from 60) with a higher energy cost (from 50 yo 60).
Bubble Beam: Boosted to 50 power (up from 25), though energy cost is increased from 40 to 50.

Psychic-type attacks

Mirror Coat: Boosted to 75 power (up from 60), though energy cost is decreased (from 55 to 45).
Psycho Boost: Increased to 85 power (up from 70) for Trainer battles and a massive 130 power in Gyms and raids. Energy cost is decreased to 33 (down from 50) in Gyms and raids.

Electric-type attacks

Charge Beam: Increased to 6 power (up from 5).

Fire-type attacks

Blaze Kick: Energy cost is decreased from 40 to 35.

Steel-type attacks

Iron Head: Increased to 85 power (up from 70).
Magnet Bomb: Energy cost is decreased from 45 to 40.
Double Iron Bash: Increased to 70 power (up from 55).

Fairy-type attacks

Draining Kiss: Increased to 80 power (up from 60), with a guaranteed chance to raise a user’s defense by one stage.
Moonblast: Power reduced to 90 (down from 110) in exchange for a decreased energy cost (60 to 50).

Poison-type attacks

Poison Fang: Increased to 50 power (up from 45).

Bug-type attacks

Lunge: Increased to 70 power (up from 60).
Infestation: Increased to 10 power (up from 6).

Dark-type attacks

Bite: Decreased to 2 power (from 4), though energy generation is increased (2 to 4).
Dark Pulse: Energy cost is decreased from 50 to 45.

Ghost-type attacks

Shadow Ball: Adjusted to 90 power (down from 100).
Rage Fist: Boosted to 55 power (up from 50), though energy cost is increased (from 35 to 40).
Shadow Force: Energy cost is decreased from 90 to 65.

Fighting-type attacks

Low Kick: Increased to 6 power (up from 5).

Twilight Trails Season’s GO Battle League New Moves

Dozens of Pokémon are also receiving brand-new move additions. These are as follows.

Infestation, a bug-type Fast Attack, can be learned by Volbeat and Illumise.
Lunge, a bug-type Charged Attack, can be learned by Volbeat.
Brutal Swing, a dark-type Charged Attack, can be learned by Arbok, Aerodactyl, Alolan Muk, and Greninja.
Foul Play, a dark-type Charged Attack, can be learned by Ariados, Darkrai, and Grafaiai.
Sucker Punch, a dark-type Fast Attack, can be learned by Victreebel and Darkrai
Charge Beam, an electric-type Fast Attack, can be learned by Audino.
Volt Tackle, an electric-type Charged Attack, can be learned by Raichu and Alolan Raichu
Draining Kiss, a fairy-type Charged Attack, can be learned by Grimmsnarl.
Brick Break, a fighting-type Charged Attack, can be learned by Aggron.
Dynamic Punch, a fighting-type Charged Attack, can be learned by Zeraora.
Low Kick, a fighting-type Fast Attack, can be learned by Deoxys (Defense Forme) and Kingambit.
Sacred Sword, a fighting-type Charged Attack, can be learned by Gallade.
Incinerate, a fire-type Fast Attack, can be learned by Houndoom.
Mystical Fire, a fire-type Charged Attack, can be learned by Mismagius.
Gust, a flying-type Fast Attack, can be learned by Crobat.
Peck, a flying-type Fast Attack, can be learned by Flamigo.
Astonish, a ghost-type Fast Attack, can be learned by Chandelure.
Shadow Ball, a ghost-type Charged Attack, can be learned by Illumise.
Energy Ball, a grass-type Charged Attack, can be learned by Cofagrigus.
Trailblaze, a grass-type Charged Attack, can be learned by Houdoom.
Drill Run, a ground-type Charged Attack, can be learned by Skarmory and Bombirdier.
Earth Power, a ground-type Charged Attack, can be learned by Lugia.
High Horsepower, a ground-type Charged Attack, can be learned by Militank.
Avalanche, an ice-type Charged Attack, can be learned by Nidoking.
Ice Punch, an ice-type Charged Attack, can be learned by Alolan Muk.
Scratch, a normal-type Fast Attack, can be learned by Ursaluna and Grafaiai.
Swift, a normal-type Charged Attack, can be learned by Hisuian Zoroak and Toxtricity (both forms).
Wrap, a normal-type Charged Attack, can be learned by Arbok.
Psywave, a psychic-type Fast Attack, can be learned by Snorlax.