By the time Street Fighter Alpha 3 hit arcades in 1998, the Super Nintendo was already a legacy console. Capcom focused its efforts on the PlayStation, Sega Saturn, and later the Game Boy Advance.
Unofficial pirate carts from the late 90s attempted to port Alpha characters into the Street Fighter II engine. Playable Alternatives to a SNES ROM street fighter alpha 3 snes rom download
If you are looking to download and play Alpha 3 today, you should focus on platforms that can actually run the game's complex "CPS-2" arcade engine. By the time Street Fighter Alpha 3 hit
Since an official SNES ROM doesn't exist, fans of the 16-bit era usually turn to these specific versions to get their fix: street fighter alpha 3 snes rom download