those 2 digit numbers that light up at the end of the game are the match number (called lots of different names around the world). so if those 2 digits that lit up matched your last 2 digits in your score you were awarded a free game.
will be interesting to see what others called it - we used to call it 'scab' a game (i'm in australia).
the eyes will flash at the end of the game.
abra ca dabra is one of the best games made from the 1970s..i would never sell mine.