I own the PI 3a. It it a cool tiny micro-computer. It can handle about any game up to...the Sega Dreamcast...not all Dreamcast games though. I think the N64 emulation is a bit lacking, but it's notorious for being a difficult system to emulate. It can handle the PS1 perfectly, NES, SNES, Genesis, GBA, GB, thousands of Arcade games and many many other older systems. All through RetroPie and EmulationStation platforms working with emulators like RetroArch behind the scenes. It really is amazing to see and use on a T.V., so much cheaper and so many more games than the mini NES, etc. and with so much flexibility and options, enhancements etc. From what I understand the PI uses an ARM processor like the processors used in cell phones and tablets. Many have discovered other very creative uses for the Raspberry PI, and they're so affordable. I've thought about using one with KODI as a media server (but I am content with PLEX), or making one into a portable high end external sound device. But others more electronically inclined than me have pushed the limits of the PI further in creative ways.