: The bulk of the "7784 games" consists of titles from the following systems: Nintendo Entertainment System (NES/FC) Super Nintendo (SNES/SFC) Sega Genesis / Mega Drive (MD) Atari systems
The "7784" figure is a marketing-style tally of ROMs across various legacy consoles. The ISO typically functions as a "Multiloader," launching built-in emulators to play games from: Nintendo Entertainment System (NES) Super Nintendo (SNES) Sega Genesis / Mega Drive Master System Technical Composition
It is typically distributed as a single 4.7GB DVD ISO image , the maximum capacity for a standard single-layer PS2 DVD.