In June 2019, it was re-released as part of Contra: Anniversary Collection for Nintendo Switch, PlayStation 4, Windows, and Xbox One and was also included in the Genesis Mini dedicated console that same year. Hard Corps has since been considered to be a spin-off from the mainline Contra entries. Hard Corps spawned its own series of follow-ups including the Appaloosa-developed sequels, Contra: Legacy of War & C: The Contra Adventure and the Arc System Works-developed prequel, Hard Corps: Uprising. The game features a branching storyline with multiple possible endings. A new task force, known as the titular 'Hard Corps', are sent to deal with the situation.

Set five years after the events of Contra III: The Alien Wars, a terrorist group led by the renegade Colonel Bahamut has stolen an alien cell recovered from the war and now intends to use it to produce weapons. Contra: Hard Corps, released as Contra: The Hard Corps in Japan and Probotector in Europe and Australia, is a run and gun video game released by Konami for the Sega Genesis in 1994, making it the first game in the Contra series released for a Sega platform.

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