8 Bit Game Making

What do you guys think makes a game "8 bit"?

@sidly-shorts 8-bit is a measure of computer information generally used to refer to hardware and software in an era where computers were only able to store and process a maximum of 8 bits per data block. This limitation was mainly due to the existing processor technology at the time, which software had to conform with

I think there is a difference between "8 Bit game" and "8 bit styled" game, a 8 bit game its a game that works in a 8 bit system, and a 8 bit styled game its a game that tries to imitate what a 8 bit game is and its aesthetic, but without following the system limitations

Isn't Mario 8-bit?

Actual 8-bit, or 8-bit style?
To me style would mean, pixel art graphics and chiptune soundtrack, no "high-quality" assets. Actual was down to hardware limitations as already explained.