Depends what you mean.
Do you mean, what games where i own your face? because that's pretty much every game in existence 
Otherwise... wow, there's a lot to choose from. i Guess The entirety of Ragnarok (RO, RBO, etc.)
"Yugian, this high ground adds + 5 to my Ownage points!"
Yugian: HAAX!
take a shooter, and add me to it, and you get ownage
specifically Cod/Halo/Gears/ any good shooter once i apply meself
At least your not going to turn out like Douku (spelling not necessary!

) and get sacked with a plot hole with that bonus. you'll turn out like general grievous who got debuffed for the movie.
If you've got modern warfare 2 or Gears 2, im good to take you on. i'll rev the saws and sharpen the knives >D
@Super Happy Horror (hate double posting so doing this >.<)
Really now? i might take you up on that...
...as soon as i get enough money to get a fighting game... ^^"