Contra Force is a run-and-gun-style shoot-'em-up video game released by Konami for the Nintendo Entertainment System in 1992 in North America only. It is a spin-off of the Contra series and the third game in the series released for the NES (following the home versions of the original Contra and Super C). In contrast to previous Contra titles, which featured sci-fi elements, Contra Force centers on a modern task force who must fight human terrorists instead. The game was originally scheduled to be released as an unrelated game in Japan titled Arc Hound (アークハウンド?), however that version was canceled and instead Konami localized the game for a North American release as a Contra spinoff.

Super Contra (スーパー魂斗羅 エイリアンの逆襲, Sūpā Kontora: Eirian no Gyakushū, "Super Contra: The Alien Strikes Back") is a Run and Gun-style action game produced by Konami, originally released as a coin-operated arcade game in 1988. It is the sequel to the original Contra and the second game in the Contra series released for the arcades. Like in the original game, the game centers on soldiers Bill Rizer and Lance Bean, who are once again assigned to protect the Earth from an army of alien invaders. The game features standard side-scrolling stages, as well as all new overhead stages in lieu of the original game's "3D" stages. Like its predecessor, a modified console version was made for the Nintendo Entertainment System, which saw release in North America as Super C and in Europe and Australia as Probotector II: Return of the Evil Forces. Both the arcade game and the NES game, have been re-released in various other platforms since their original releases.