I was about 6 when MK1 hit arcades...

BUT... I didn't even know MK existed until I was 8 years old (one year before MK3 came out).

My first game was actually MK1 because my parents weren't educated on video games and didn't buy me MK3.

Then I finally played MK3.

I didn't touch MK2 until after I played MK3... as funny as that may sound.

Obviously from there it was UMK3.