.SMD File Extension

Three-dimensional model file used by Source Engine, a game engine used to develop games such as Half-Life; stores the model in an ASCII text format; compiled into the resulting .MDL game model using Studiomdl command line utility and a .QC script.

An SMD file is a game ROM used by Sega Genesis and Mega Drive emulators. It contains a copy of the game data stored on a Sega Mega Drive game cartridge. SMD files allow gamers to play Mega Drive games on their PCs, using emulators such as Kega Fusion.

Outside North America, the Sega Genesis was known as the Sega Mega Drive. Released in 1988, the Mega Drive was one of Sega's most popular video game consoles. Notably, the Mega Drive was the first Sega console to feature a game starring Sonic the Hedgehog.

Gamers who want to play classic Mega Drive games on their PCs can do so by downloading a Genesis emulator and using it to load a Mega Drive game ROM, which is a copy of a Mega Drive game. Many Mega Drive game ROMs are saved as SMD files. Some Mega Drive game ROMs are also saved as .GEN files, despite being copies of the Mega Drive version of a Genesis game.

You can open an SMD file and play the video game it contains in any of the following Sega Genesis emulators:

• Kega Fusion (cross-platform)
• Gens+ (Windows)
• Genesis Plus (Mac)
• MD.emu (Android)