Typically downloaded as a compressed archive (.7z, .zip, or .rar) which must be extracted using tools like WinRAR or ZArchiver to get the playable ISO file.
Set the to "High Performance" to avoid lag in demanding areas.
Mortal Kombat: Shaolin Monks deserves to be played. Its visceral combat, co-op fatalities, and exploration of the MKII island are peak 6th-gen gaming. While the "highly compressed" path is tempting for its low storage footprint, remember that the developers at Midway Los Angeles (now defunct) poured years into this title.
Enable "Load Textures" under the Texture Replacement tab in the emulator's graphics settings.