There are many games that have been reissued and being newer consoles it is not so difficult to find models that are still 100% functional on the second-hand market. The first three Playstation have also managed to emulate (PS1, PS2 and PS3) and also the Sony PSP laptop.
Sega Dreamcast emulator for macOS: OpenEmu.Sega Dreamcast emulators for Windows: uoYabuse, Mednafen, SSF, RetroArch.Sega Game Gear Emulator for Android: RetroArch Sega saturn.Sega Game Gear emulator for Linux: Mednafen.Sega Game Gear emulators for macOS: Kega Fusion, OpenEmu.Sega Game Gear emulators for Windows: Mednafen, Kega Fusion, Regen, RetroArch, Higan, Retrix.