History of changes to Smogon University’s OverUsed formats after they were no longer considered the “current” generation. These changes usually occurred due to post hoc tiering actions taking by the respective Old Generation Councils, though impactful revelations about how certain mechanics work are also included.
Gen I
- Body Slam — December 27, 2014
- Crystal_ discoveries — June 20, 2015
- Desync Clause — November 14, 2020
Gen II
- Freeze Clause — December 31, 2017
- Sleep Trap — April 3, 2018
- Evasion Items Clause — July 1, 2022
- Trap Pass — July 10, 2022
Gen III
- Sleep Talk — July 14, 2015
- Switch Priority Clause Mod — December 29, 2017
- Mr. Mime — May 23, 2021
- Soundproof — April 4, 2022
- Block + Baton Pass — May 12, 2022
- Freeze Clause — June 23, 2022
- Evasion Items Clause — July 1, 2022
Gen IV
- Evasion Abilities — January 3, 2016
- Unban Froslass — April 3, 2017
- Restrict Baton Pass — July 1, 2018
- Unban Latias — November 1, 2018
- Sand Veil — March 28, 2019
- Ban Baton Pass — May 14, 2020
- Arena Trap — November 2, 2020
- Swagger — January 26, 2022
- Freeze Clause — June 23, 2022
- Evasion Items Clause — July 1, 2022
- Quick Claw — July 3, 2023
- Restrict Baton Pass — December 12, 2023
Gen V
- Baton Pass — July 6, 2015
- Swagger — April 14, 2016
- Dugtrio — April 4, 2018
- Arena Trap — September 27, 2018
- Sand Rush (Unban Excadrill) — November 1, 2018
- Sleep — December 26, 2019
- King’s Rock — July 5, 2021
- Assist — October 7, 2021
- Evasion Items Clause — July 1, 2022
- Ban Baton Pass — January 15, 2022
- Gems — July 10, 2022
- Restrict Baton Pass — November 14, 2022
- Acupressure — April 13, 2024
Gen VI
- Arena Trap — October 18, 2017
- Baton Pass — March 25, 2018
- Evasion Items Clause — July 1, 2022
Gen VII
- Evasion Items Clause — July 1, 2022
Gen VIII
- Evasion Items Clause — July 1, 2022