Operation C, released as Contra (コントラ, Kontora) in Japan and as Probotector in the PAL region, is a 1991 run and gun game by Konami released for the Game Boy. It is the first portable installment in the Contra series and features gameplay and graphics similar to the Nintendo Entertainment System versions of Contra and Super C.

Operation C, released as Contra (コントラ, Kontora) in Japan and as Probotector in the PAL region, is a 1991 run and gun game by Konami released for the Game Boy. It is the first portable installment in the Contra series and features gameplay and graphics similar to the Nintendo Entertainment System versions of Contra and Super C.