, as this specific version (from 2010) is the backbone for arcade emulation on older or lower-powered hardware. The Story of MAME 0.139u1

The Ultimate Guide to MAME 0.139u1 ROMs: Best Repacks and Download Tips

Smaller file sizes, but games rely on "parent" ROMs to work. If you delete the parent, the clone won't boot. Where to Find Them

The Ultimate Guide to MAME 0.139u1: ROM Downloads and Repacks