Status: Finished
Publication Date: May, 1973—August, 1974
Worlds Unknown #1
"The Day After the Day the Martians Came!"
Release date: February 6, 1973
Cover date: May, 1973
"The Day After the Day the Martians Came!"
Release date: February 6, 1973
Cover date: May, 1973
Worlds Unknown #2
"A Gun for Dinosaur!"
Release date: April 3, 1973
Cover date: July, 1973
"A Gun for Dinosaur!"
Release date: April 3, 1973
Cover date: July, 1973
Worlds Unknown #3
"Farewell to the Master!"
Release date: June 5, 1973
Cover date: September, 1973
"Farewell to the Master!"
Release date: June 5, 1973
Cover date: September, 1973
Worlds Unknown #4
"Arena"
Release date: July 31, 1973
Cover date: November, 1973
"Arena"
Release date: July 31, 1973
Cover date: November, 1973
Worlds Unknown #5
"Black Destroyer!"
Release date: October 23, 1973
Cover date: February, 1974
"Black Destroyer!"
Release date: October 23, 1973
Cover date: February, 1974
Worlds Unknown #6
"Killdozer!"
Release date: December 18, 1973
Cover date: April, 1974
"Killdozer!"
Release date: December 18, 1973
Cover date: April, 1974
Worlds Unknown #7
"The Golden Voyage of Sinbad!"
Release date: March 5, 1974
Cover date: June, 1974
"The Golden Voyage of Sinbad!"
Release date: March 5, 1974
Cover date: June, 1974
Worlds Unknown #8
"Land of the Lost"
Release date: April 30, 1974
Cover date: August, 1974
"Land of the Lost"
Release date: April 30, 1974
Cover date: August, 1974