SEGA Genesis Classics offers a good batch of games and some extra niceties, even if it's missing some first-party hits.
Select retro games will still be available on NSO.
Atlus / SEGA Black Friday 2023 Switch sale has lowest prices for Persona 3 and 4, SEGA Genesis Classics, Shin Megami Tensei III, and more.
Mario, TMNT, Sonic, some of the best retro games live on the Nintendo Switch.
The Steam version is the best.
59 games on the Steam version, including Sonic 3 & Knuckles and the Ecco the Dolphin games.