Shin Akuma in Street Fighter Alpha 2 - a SNES Code, Hidden for 24 Years

This iconic guy is available as a playable character, but the community discovered such an option only in 2020

Street Fighter Alpha 2 Akuma Cheat

A Cheat Code To Unlock Shin Akuma In Street Fighter Alpha 2 Has Finally Been Discovered After 25 Years

Retrospective: Street Fighter – Easy as 1, 2, …Alpha

After 25 Years, A New Cheat Code Has Been Discovered For Street Fighter Alpha 2 On The SNES

Street Fighter Alpha 2 - Sega Saturn - Shin Akuma / Gouki Secret Battle with Evil Ryu [1080p 60fps]

Street Fighter Alpha 2 (SNES) - The Cutting Room Floor

Retrospective: Street Fighter – The Second Coming

How do you fight Shin Akuma in Street Fighter Alpha 2 without playing through the arcade? : r/StreetFighter

Street Fighter Alpha 2 (Game) - Giant Bomb

Street Fighter Alpha 3 (PlayStation) - The Cutting Room Floor

Modder discovers hidden method to unlock Shin Akuma after 25 years in Super Nintendo version of Street Fighter Alpha 2 : r/snes

Hihofai Gaming Universe

Super Street Fighter II Turbo - Wikipedia

Retrospective: Street Fighter – Easy as 1, 2, …Alpha