Contra's only original Game Boy outing sends Bill Rizer in alone after a hostile force that has been using alien cells to grow biological weapons. Konami released it in 1991, and while North America knew it as Operation C, Europe got it as Probotector with the human soldiers swapped for robots, matching the series' European censorship of the time.
The structure borrows from Super C on the NES: side-scrolling run-and-gun stages alternate with top-down stages, and each one ends in a big boss. Weapon pickups include the familiar spread gun and a homing gun that seeks out targets on its own, a welcome help on the small screen. There is no two-player mode, but the game moves fast, the bosses fill the screen in a way few Game Boy shooters managed, and the stages are short enough that a full run takes well under an hour once you know the patterns. It remains one of the strongest action games on the original handheld.
Tips for Operation C
Hold on to the spread gun for boss fights; its wide coverage hits weak points from awkward angles.
In the overhead stages, keep moving diagonally to slip between enemy shots instead of trying to outrun them.
Dying drops your current weapon, so play extra carefully after grabbing an upgrade.
How to Play Operation C
Click Play Now to launch Operation C directly in your browser — no downloads or plugins needed. Arrow keys move and aim in eight directions, Z jumps, and X fires. Enter pauses. You can also connect a USB or Bluetooth gamepad for a more authentic feel.
Save states let you save your progress at any point. Create a free account to sync saves across devices. Press F11 for fullscreen mode.
To play Operation C, simply hit the "Play Now" button on this page. The game loads instantly in your browser using an embedded emulator — no plugins, downloads, or setup required.
Is Operation C free to play?
Yes, Operation C is completely free to play on RetroVault.GG. Just visit the game page and start playing in your browser.
What console is Operation C for?
Originally a Game Boy game, Operation C can now be played directly in your browser here on RetroVault.GG with no setup needed.
What genre is Operation C?
Operation C is a action, shooter game. It was made for the Game Boy.
Can I play Operation C on my phone?
Yes, RetroVault.GG works on mobile browsers. Visit the game page on your phone or tablet and tap Play Now to start playing Operation C.