What are some well known "bad games" that you really enjoyed playing?

For me it would be Pokemon Violet.

Yeah the graphics are ugly and the game had a lot of bugs at release but I still had a really fun time with it. It was the first mainline Pokemon game to be fully open world with Pokemon actually appearing in the world without random encounters and man did I really love it when first got my hands on it when I was 16. I managed to get over 300 hours in the game mostly because of shiny hunting but I also really enjoyed the characters and gameplay loop, making it one of my top 5 favorite Pokemon games.