Chain Reaction (1980)

Chain Reaction was hosted by Bill Cullen in 1980, but went off the air that same year. In 1986, it was revived as "The New Chain Reaction" in 1986 with host Geoff Edwards. It ran until 1991. Two teams of two players competed. Each team had a giver and a guesser. The giver could give the letter in the next word of the chain to either his/her partner or opponent. A correct guess won the appropriate number of points for the round and retained control, while an incorrect guess passes control to the opponents. If you give a letter to your opponent and he/she doesn't get the word, you get to go again.