not sure, can't recall exactly but i think some where around kid age like 7 i guess... when playing those tv games (that what i call) at my uncle house with his kids.... those tapes style machine... can eject out punya haha like you press it and it pop out... very old fashion...

games such as:

the king kong drop some barrels, i need to climb up to rescue the princess... donkey kong?? this that what u call?

super mario of course...

space invaders ^^

some plane shooting game... no idea what it call

fighting game.... no idea what it call

etc.