Hmmm, good question.
There’s a big difference between what I was good at back when I was younger and what I’m good at now.
The 2 games I would consider myself best at are also my 2 favorite games ever, Q*Bert and TMNT Arcade. I played them both so much I feel like I know them thoroughly.
With Q*Bert, even if I come back to it after not playing it for years I can still fairly easily make it past Level 9. It’s the only game I feel like I could challenge the WR if I put in the time and practice. However, the world record holder also set the record for longest continuous game session at the same time (like 43 hours or something) and I could never do that.
With TMNT (arcade), I can beat it easily on 2 credits (3 lives). My secret shame is that I’ve never 1CC’d it. The farther you get without dying, the harder the game gets until you die, to the point the final bosses become absolute damage sponges. Once I did get to Krang on one credit but the damage he absorbed was insane, and the fight lasted so long I lost concentration and died.
Other games I was pretty good at back in the day but my skills have waned:
Contra (NES)
Axelay (SNES)
Batman (NES)
Gremlins 2 (NES)
Castlevania 3 (NES)
Super Castlevania 4 (SNES)
Castlevania: The Adventure (GB)
Castlevania 2: Belmont’s Revenge (GB)
Ninja Gaiden 2 (NES)
Resident Evil (PS1)
Resident Evil 2 (PS1)
Resident Evil Code Veronica (DC)
I used to think I was pretty good at Street Fighter 2, Street Fighter 2: CE, & Street Fighter 2 TE until I started playing against other players.
I tend to do okay playing Skyrim. I rarely ever get killed...of course that might be because I've made use of the in-game exploits such as putting enchantments on my weapons & armor that give me an insane percentage boost.
Like gloves that allow me to carry 1,210,547% more weight, or a sword that does 2,041,759% in fire damage, or body armor that gives me 3,597,866% more HP. It makes fighting the Ebony Warrior much easier. I used to get slaughtered every time. Once a dragon even got involved & I thought I'll just let the dragon kill him...NOPE! Didn't happen. He killed the dragon & then killed me afterwards.
Double Dragon would have to be my favorite though.
Just wanted to add, Bossman is one of my favorite wrestlers ever. I loved watching him in the late 80’s/early 90’s. When I started watching WWF regularly, Bossman’s face turn on the Brother Love Show is the first major turn I saw, and I never forgot it.