content: there's lots of cool MAME builds out there aren't necessarily large arcade boxes https://youtu.be/F0ibP6dJj-c  you can do a lot these days with smaller form factors too, like the raspberry pi which has an internal graphics card that can run games as advanced as Quake 3, but can handle all the older gen games swimmingly. or if somebody has lots of roms on their HTPC and just wants a front end they could just get that going pretty easily too https://youtu.be/THV-30R3q6Q