This dataset maintains the up-to-date supply of Pokémon Showdown replays used by the Metamon project. Battles are publicly available from the Showdown replay API. We provide them here to create a convenient starting point for building new parsed-replay verisons of the RL dataset, and maybe to save Showdown some download requests. Usernames have been replaced by a unique randomly generated pseudonym that is consistent across battles.

Versions

The dataset is updated on a semi-regular schedule (TBD) as new games are played.

The original Metamon conference paper trained on 475k replays with a cutoff of September 2024.

v1: First organized public release. Cutoff: April 25th, 2025. New: N/A. Total: 536k.
v2: Cutoff: May 29th, 2025. New: +7.7k. Total: 544k.
v3: Cutoff: Does not add Gen1-4 OU/NU/UU/Ubers replays. Instead, backfills the dataset with 1.2M Gen9 OU replays up to June 16th, 2025. New: +1.2M. Total: 1.8M.
v4: Cutoff: August 12th, 2025. New: +177k. Total: 2M
v5: Cutoff: January 18th, 2026. New: +389k. Total: 2.39M
v6: Cutoff: May 19th, 2026. New + 300k. Total: 2.68M

The low replay volume between 2021-2024 (see plot above) is thought to be caused by a Showdown replay database failure. Ladder replays recovered from the outage were set private by default, meaning most replays from that time period that we can find today are from tournaments/smogtours. If you were working with Showdown replays in 2021-2024 and think you have logs that might help fill the gap, please get in touch!

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