I'm fond of the Anbernic emulator devices. The nicer ones are fairly powerful with touch screens and full controllers, so they can play a LOT of games. With large SD cards so cheap these days, you can carry around a MASSIVE library of games covering whole catalogs for pre-3D systems like the Neo Geo.
Discussion
Is it easy to run Neo Geo games now via an emulator. My attempts to get them to work have been lackluster at best.
