Formerly Acclaimed Games

[Bofferbrauer2]

• Bubsy comes to mind. It was very acclaimed at launch, which resulted in several sequels and partnerships coming, but nowadays it's mostly laughed or facepalmed at. Even Bubsy 3D didn't really get any bad reviews at the time, but now it's considered one of the worst games ever.
• Battle Arena Toshiden, which got glowing reviews but later got completely overshadowed by Soul Edge and the Soul Calibur series since it did pretty much everything better than BAT, and now is mostly considered just a middling game
• Civilization III, once considered miles better than II, is now generally seen as by far the worst of the bunch.
• Zelda II: The Adventure of Link was one of the most acclaimed titles on the NES, but after A Link to the Past on the SNES it'svery different gameplay to the rest of the series and sometimes absurd diffculty made it the most hated Zelda title for a very long time. Thankfully, it's slowly getting reappreciated, with an enhanced remake on PC having been made by some indie developer, so hopefully it will get it's status restored.