My game is going to have a lot of reliance on music so I want to know if it's allowed to use audio that is era-specific (e.g. Chiptune, 8-Bit) but certainly is more advanced in terms of audio than something like a Game & Watch game. Are we allowed to do this or does the audio have to be more like the example below.
And what about LCD games that play a pre-recorded file instead of synthesizing audio? Like the one below.
How far are we allowed to push the words "chiptune like"?