Milton Bradley Connect Four (for Microvision) (1979, Model# 4971)
Based on the tabletop game, each player takes turns dropping their piece in one of the columns. First one to have 4 in a row wins. (Possible variation: I believe there are some Connect Fours that have squares instead of circles on the 'playfield')
Do I have this? Yes, boxed and one sealed (These are mine pictured).