To get the most out of your MAME 0.72 repack, it helps to understand how MAME ROMs are structured. The files commonly referred to as "ROMs" are actually compressed .zip or .7z archives. These files contain all the individual program data, graphics, and sound chips that the original arcade board used.
Get a Non-Merged repack. The extra hard drive space is trivial today, and the convenience of drag-and-drop play is worth it. mame 072 roms repack
(Compressed Hunks of Data) files used by later 3D arcade games, which can take up terabytes of space. Understanding ROM Sets: Merged vs. Non-Merged To get the most out of your MAME 0
(Multiple Arcade Machine Emulator), a project dedicated to emulating the hardware of thousands of vintage arcade machines. Among the hundreds of versions released over the decades, version 0.72 Get a Non-Merged repack
What are you hosting the games on? (PC, Android, Raspberry Pi?) Which frontend or app are you using to launch your games?
This article is for informational and preservation purposes. MAME itself is a legal emulator, but ROMs are copyrighted software.