Hey dudes!!

I went to a flee market where somebody had a NES with 2 controllers, a Game Genie and some games (A pirate SUPER 700-IN-1, Mario 1 + Duckhunt and a Track and Field 2 cart.
On the Game Genie device there there was a loose PCB.
I asked what it was and  the guy said he didn't know.
I asked what the full set would cost , and the full set was 25 euro's.

So I bought the thing and when I got home I couldn't wait to play the unit
I played Mario for a while. tried the 700-in-1 cartridge (contains a sh*t load of double games) and after that I tried the loose pcb.
Grey screen....hmmz
Cleaned the contacts and tried again...BINGO!!
DOUBLE DRAGON !!
But when I start the game I notice something....there is no intro where the girl of the game gets a punch in the stomach and when Mission 1 starts I see  "free play" in place where "P-x" (x is the amount of lives you have left).

That's odd, could this be a hack placed on a board ?

my gues would be... pirate

picture?