Season 16

Season 16 of GO Battle League, also called GO Battle League: Adventures Abound, lasted from September, 2023 to December , 2023. It is preceded by Season 15 and succeeded by Season 17. This GO Battle League Season ran concurrently with Adventures Abound.

Formats
Element Cup Remix: Little Edition: 500 CP limit. Only Fire-, Water-, and Grass-types allowed. Only Pokémon that are able to evolve and have not evolved even once are allowed. Chinchou, Cottonee, Ducklett, and Salandit are banned.

Psychic Cup: Great League Edition: 1,500 CP limit. Only Psychic-type allowed. Mew is banned.

Sunshine Cup: Great League Edition: 1,500 CP limit. Only Normal-, Fire-, Grass-, and Ground-types allowed. Charizard is banned.

Halloween Cup: Great League Edition: 1,500 CP limit. Only Poison-, Bug-, Ghost-, Dark-, and Fairy-types allowed.

Electric Cup: Great League Edition: 1,500 CP limit. Only Electric-type allowed. Stunfisk, Heliolisk, Charjabug and Vikavolt are banned.

Catch Cup: Adventures Abound Edition: 1,500 CP limit. Only Pokémon caught during Adventures Abound allowed.

Rewards
Basic Premium
 * Rank 5: Mysterious Item
 * Rank 10: 750 (Basic) / 1500 (Premium) Stardust
 * Rank 15: 1 (Basic) / 2 (Premium) Rare Candy
 * Rank 19: Pokémon Encounter
 * Other ranks:

Stardust

The random items can include:
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Reaching rank 19 awarded:

Reaching Ace rank and above awarded avatar items and an avatar pose inspired by Geeta from Pokémon Scarlet and Violet.

Geeta-Style Gloves could also be obtained from GO Battle Day rewards.

Pokémon
Guaranteed first Pokémon encounters:
 * Bisharp: rank 1 (one only)
 * Carbink: rank 6
 * Goomy: Ace rank
 * Gible: Veteran rank
 * Jangmo-o: Expert rank
 * Pikachu Libre: Legend rank (one only)

Tier 5 Raid Bosses could be obtained starting at rank 20 during their time in raids.

End-of-Season rewards

 * (rank 19 or above)

Timed Research
GO Battle League Timed Research is for the GO Battle League Season 16. A Ticket for this Timed Research was available in the in-game shop at no cost from September, 2023, at 1:00 p.m. PDT to September , 2023, at 1:00 p.m. PDT. Each part of the Timed Research had the same requirements, with the only difference being the rewards for completing each part.

GO Battle Weekend: Adventures Abound
GO Battle Weekend: Adventures Abound took place from October, 2023, 12 a.m. local time to October , 2023, 11:59 p.m. local time. Great League, Ultra League and Master League were available during this GO Battle Weekend.

* The planned paid Timed Research became free for everyone due to an error

Attack updates
These Attack updates went live at the start of the Season:

Attack changes

 * Spark: Base power increased from 4 to 6 and energy gain decreased from 8 to 7 in Trainer Battles.
 * Astonish: Energy gain increased from 9 to 10 in Trainer Battles.
 * Psychic: Base power decreased from 90 to 85 in Trainer Battles.
 * X-Scissor: Base power increased from 45 to 65 and energy cost increased from 35 to 40 in Trainer Battles.
 * Aerial Ace: Energy cost decreased from 45 to 40 in Trainer Battles.
 * Sky Attack: Energy cost increased from 45 to 50 in Trainer Battles.
 * Dig: Base power decreased from 100 to 80 and energy cost decreased from 80 to 50 in Trainer Battles.
 * Earthquake: Base power decreased from 120 to 110 in Trainer Battles.
 * Poltergeist: Base power increased from 140 to 150 in Trainer Battles.
 * Boomburst: Energy cost decreased from 75 to 70 in Trainer Battles.

Attack availability
Some Pokémon received new Attacks to their standard Attack pools: