The serial killer David Berkowitz was sentenced to life in prison in 1978. Also in that year, the first Susan B. Anthony dollar was made.
Miracle at the Meadowlands happened in 1978.
Accidents Will Happen was created in 1978.
Decwar happened in 1978.
Pirateer happened in 1978.
RuneQuest happened in 1978.
Cosmic Conflict happened in 1978.
Ozma Wars happened in 1978.
Gamma World happened in 1978.
Beagle conflict happened in 1978.
Operation Bruilof happened in 1978.
Montezooma's Revenge happened in 1978.
Space Invaders happened in 1978.