My first video game system was the Oddessy 1 by magnavox and you used to have to put color overlays on top of your black and white tv to play it.
Google it... my Dad was a tech junky from way back. I wanna say we had this thing like in 1973 or 1974
I orginally had it as 1976 but we had moved from the house i remember playing it in by then so it must have been earlier i think