Terrific was very similar in format to Fantastic, which had started publication two months earlier. The two titles were quite unlike other British comics of the time, consisting for the large part of material reprinted from American Marvel Comics. In this respect they can be considered a precursor of the Marvel UK weeklies such as The Mighty World Of Marvel that appeared during the 1970s.
The Marvel titles that were reprinted in Terrific include The Avengers, Strange Tales (Doctor Strange) and Tales to Astonish (Sub-Mariner and Giant-Man).