The Pandora Treasure 3D is a 2-player control panel with the computer already inside: 30,000 games, HDMI and VGA output, a search function and favorites list, and LED-backlit acrylic on top. Plug it into a TV and play, or mount it as the brain-and-controls of a cabinet build.
Set expectations like a jukebox, not a curated library — and it is a lot of fun per dollar.