You can unlock Shin Akuma in Ultra Street Fighter II: The Final Challengers with a special code – Destructoid

Well, someone’s gotta stand up to Evil Ryu and Violent Ken Capcom announced during their Street Fighter 30th anniversary San

Shin Akuma can be unlocked in Ultra Street Fighter II: The Final

Street Fighter Alpha 2 - Super Nintendo - Intro & Arcade Shin

Master of the Fist! Shin Akuma - Arcade Mode - Ultra Street

You can unlock Shin Akuma in Ultra Street Fighter 2 on Nintendo

NS Ultra Street Fighter II: The Last Challengers - Buddy Battle

Ultra Street Fighter II: Unlocking Shin Akuma

You can unlock Shin Akuma in Ultra Street Fighter II: The Final

List of Nintendo Entertainment System games - Wikipedia

You can unlock Shin Akuma in Ultra Street Fighter 2 on Nintendo

Review: Street Fighter III: 3rd Strike Online Edition – Destructoid