The Mouse is necessary if you’re going to use a SNES. Beyond the fact that you need it for Mario Paint, the Mouse is just cool. It feels like a real Mouse and works well with the games that need it.
Acme Animation Factory
Advanced Dungeons & Dragons: Eye of the Beholder
Arkanoid: Doh It Again
On the Ball
Fun 'n Games
J.R.R. Tolkien's The Lord of the Rings: Volume 1
King Arthur's World
Lamborghini American Challenge
Lemmings 2: The Tribes
Mario's Early Years: Preschool Fun
Might and Magic III
Sid Meier's Civilization
SimAnt: The Electronic Ant Colony
Super Caesars Palace
T2: The Arcade Game
Utopia: The Creation of a Nation
List of compatible Mouse games
Also necessary for several games, the Super Scope makes an appearance because shooting games were cool when you had a rocket launcher like the Scope.
Game Genie/Action Replay
For those of us who wanted to get a little more out of our games after playing through a million times, the Game Genie and the Action Replay were excellent hacking tools that helped make gaming slightly easier as well.
Super Game Boy
Back before cross play was a thing, there was the Super Game Boy. The Super Game Boy allowed you to play your Game Boy games using the SNES cartridge slot to function as a Game Boy. It offered some additional color opportunities and use of a SNES controller, making it a decent and worthwhile addition to the SNES peripheral lineup.
Definitely one of the more futuristic and awesome peripherals to be released during the 16-bit era was the XBand. The XBand was the precursor to the modern-day Xbox Live and PlayStation Network, offering modem play in quite a few games. Games such as Mortal Kombat 3, Super Street Fighter II and Killer Instinct received support. The XBand, despite its status as the father of online gaming, was discontinued in 1997.
No console was complete or worth its salt without the ability to play games with more than one person. Every system except for the N64 and Sega Dreamcast had to have a multitap, which allowed at least four players to simultaneously play supported games. In the case of the SNES, the Super Multitap by Hudson was one of the best on the market. It added capabilities for Super Bomberman, but curiously was never made compatible with any Nintendo first-party titles or officially produced and endorsed by Nintendo.