IV/Play (pronounced ‘Four Play’) is a desktop oriented GUI front-end for MAME™. It was designed and commissioned by John IV as an alternative to MAMEUI. It has a narrow and particular feature-set, is keyboard driven, and utilises many of the navigation and keyboard short cuts of MAMEUI. It is available as a combo x64/x86 app and is targeted towards Windows 11 with leveraged features like Jump List support. IV/Play is decoupled from setting MAME options directly in an effort to future proof and guard against periodic core command line changes.