Playing Call of Duty World at War for the first time, if that counts as retro. I had always played co-op games with my brother, and when he was gone for a weekend, I decided to try and play for myself. Spent countless hours replaying missions until I finally beat the campaign. And if I remember correctly, it drops you straight into zombies with no warning. I remember it being way past my bedtime, sitting alone in the dark. I was absolutely terrified because I was genuinely shocked by the premise and maybe too young for something so scary. Didn’t sleep at all that night.