I chose this specific Mac Mini model because this is the last model that supported the Mac OS X 10.6 Snow Leopard operating system—the next 2011 Mac Mini shipped with OS X 10.7 Lion and cannot be downgraded. Snow Leopard was the last version of Mac OS X to support the Rosetta compatibility layer, which allowed PowerPC Mac OS X applications and games to run on Intel Macs through an invisible emulation layer. With Mac OS X Snow Leopard installed, this Mac Mini can run most Mac apps and games released from around 2001 to roughly the mid-2010s, when most software started dropping support for Snow Leopard.