The era where "retro" meant "NES" is behind us, now retro means Game Boy Color, PS1, and Quake-era PC aesthetics. To wit, the developers of Shovel Knight (the premier NES platformer homage) are developing a GBC-styled Bloodborne-like called Mina the Hollower: https://www.yachtclubgames.com/games/mina-the-hollower/ (though sadly it's not designed to run on original hardware).