An SMC file contains data dumped from a SmartMedia Card, a flash memory card used by various devices to store information. It stores an exact copy of the data transferred from the card. SMC files are most often used to contain data for GP32 games, which is a handheld game console released in 2001.

SmartMedia cards are thin cards that look similar to floppy disks and can be inserted and removed from devices to store and transfer information. The cards were introduced in the 1990s and were commonly used in the 2000s with digital cameras, PDAs, portable digital audio players, and handheld game consoles. The storage capacity of the cards ranges from 2MB to 128MB, which means SMC files may range from 2MB to 128MB in size since they store an exact copy of the data. As technology improved, better storage devices were developed and the production of SmartMedia cards ceased in the 2010s. SmartMedia Card SMC files are typically used by gaming enthusiasts, specifically nostalgic gamers who enjoyed playing the South Korean GP32 handheld game console manufactured by Game Park. SMC files that store game data can be opened and emulated on a computer using MAME and GeePee32.