I thought the original was far better than the second and the Undead Nightmare was a surprisingly good extension of the game. The story was better, the characters were better. Obviously the graphics were worse, I don't know if the new release updates those in a meaningful way or not.
I know RDR2 was wildly popular, but I thought it really dragged. I managed to "finish" the story and then...it just kept going, so I finally quit. I don't know how much was left, but I mostly regret not having quit much earlier.
Deus Ex. When I first played it I was amazed by the graphics and I specifically remember being impressed that your character was reflected in mirrors. I've been replaying it recently and the graphics are obviously very dated, but it also doesn't run smoothly on modern hardware. My PC gets louder and louder as I play it and eventually the game starts to stutter and I have to restart it.