In the context of emulation and ROM dumping, "Rom 18" usually indicates the specific release number or the catalog ID assigned by the piracy group that manufactured the original cartridge, or the specific dump ID used by the preservation scene to track it.
While many multicarts relied on early, small-memory titles, the 190-in-1 was notable for including several larger or less common 64kB games that were rare for such compilations at the time: BootlegGames Wiki Solomon's Key Adventures of Dino Riki (often labeled as "New Type" or "The New Human") BootlegGames Wiki The cartridge also featured NES staples such as Super Mario Bros. (often the Tengen version), BootlegGames Wiki Hardware and Technical Quirks
A glitched, disorienting version of Super Mario with weird graphics.