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During the SNES' lifetime there were a wide variety of Copier devices available for dumping and simulating cartridge ROMs.

These devices were the origin of SNES ROM file formats, and responsible for the extra 512-byte headers which appear in many ROM files, as well as the many varied filenames:

  • .SMC - Super Magicom
  • .SWC - Super Wild Card
  • .FIG - Super Wild Card

Some devices also used "trainer" patches, either to make a game compatible with the copier, or to add cheats or other modifications for the player.