Before the fifth generation, the hardware of consoles was about equal in performance and differed very little.
Gentry Edmond
They still make new games for the 16-bit Sega Mega Dive
Quite recently I wrote about the release of an unusual long-build for the old Sega Mega Dive called Paprium.
How games and consoles have changed
Modern versions of retro consoles have inherited from their forebears only the body and a classic recognizable appearance.