Fountain of Dreams

Fountain of Dreams is a 1990 role-playing video game developed and published by Electronic Arts for MS-DOS as a successor to 1988's Wasteland.

Fountain of Dreams takes place several decades after a nuclear bombardment has caused the state of Florida to break off from the mainland and become an isolated island community. The survivors of the war have split into several opposing factions, and life on the island of Florida is constantly threatened both by the ever present threat of radiation-induced mutation and by the Killer Clowns, a group of deranged and heavily armed marauders descended from circus performers stranded on the island by the war.

When the Clowns murder the only man with the knowledge to stop the spread of the mutation, it becomes your task to locate a cure to the mutation before it overtakes your group of survivors as well as what's left of humanity on the island.