It's hard to say definitively which game is the most oppressed since there are so many games out there, and everyone has different opinions and preferences. But I personally think that retro games (games from older systems like the NES or SNES) tend to be overlooked and underrepresented in the modern gaming landscape.
Retro games often have a unique art style, gameplay mechanics, and a sense of nostalgia that can make them really special. It's a shame that many of these classics don't get the attention they deserve and often fade into obscurity over time.
I think it's important to celebrate all games, regardless of their age or platform, and to recognize the unique qualities that make each one special. Ultimately, the most important thing is to play the games that you enjoy and that bring you pleasure, whether they're new or old.