While waiting in a bar for his partner, Cobra encounters a beautiful bounty hunter named Jane. Very soon he realizes that the bounty Jane has been hunting for is his own head, for which the Galaxy Patrol has put quite a reward. But everything changes when Crystal Boy, the head of the Pirate Guild and Cobra's archenemy, appears on the scene. Jane's father had apparently hidden a great treasure, encoding its location in tattoos on the backs of his triplet daughters. Crystal Boy wants this treasure, and is going after Jane and her sisters. Cobra and Jane decide to join forces in order to find Jane's sisters and to undermine Crystal Boy's plans.
The game is a Japanese-style Adventure Game. The player advances in the game by choosing various commands ("Look", "Talk", etc.). There are a few places in the game where Cobra dies if the player makes a wrong decision. In the final location the player will also have to fight enemies in turn-based style. The game features a large number of animated cutscenes as well as voice-overs for many dialogues.
This Video Game contains examples of:
- Action Girl: Lady and Jane Royal.
- Adaptation Distillation: Although the game is based off the early Royal Sisters story arc, it borrows elements from even the last few volumes of the manga and makes some stuff up.
- All Just a Dream: Whenever Cobra recovers from a game over.
- American Kirby Is Hardcore: The Sega CD opening narration drops all references to Cobra being a heroic pirate.
- Attack Drone: The villain Tarbeige is protected by orbiting spheres that block and reflect all projectiles fired at him. In order to kill him, Cobra runs inside a morgue and hides in one of the coffins. The player must listen to the sound of Tarbeige's footsteps and jump out at the right time to blast him at point-blank range.
- Big Bad: Crystal Boy.
- Bodyguard Babes: Destroyer and Bomber, the cyborg executioners in Schultz's prison.
- Brainwashed and Crazy: Tarbeige infects his victims with plant parasites to control their minds. He brainwashes Jane and makes her kill her own sister Catherine. Similarly to the manga, he also brainwashes a dancer and several female guards into attacking Cobra.
- But Thou Must!: The game is actually quite linear and doesn't give you many options. At several scenes the actions you can choose either all have the same result or are dismissed by Cobra as stupid. It's quite a surprise when a bad choice actually does result in a failure scene.
- Death Is a Slap on the Wrist: If you die in any of the few sections dying is even possible, you just get set back to the beginning of the scene.
- Difficulty Spike: The last area suddenly changes the genre to a dungeon crawler featuring a maze of bottomless pits and actual turn-based combat where you actually have to pay attention to what you're doing.
- Gratuitous English: The opening narration was already in english in the original PC Engine CD version, featuring a few mishaps like calling the Psychogun a "pistol-first firearm".
- Green-Skinned Space Babe: The beautiful purple-skinned dancer who ends up dying by Cobra's hand after getting brainwashed. Oddly enough, she's not the dancer that's supposed to appear in this story but instead another dancer from a similar situation that happens in volume 4 of the manga.
- Kiss of Death:
- When Cobra punches a hole through Destroyer, she gives him a kiss on the neck before dying. Cobra is weirded out but doesn't think much of it while sneaking back to his cell. When Schultz comes to interrogate him, however, he notices the lipstick mark and realizes what Cobra did.
- At one point Cobra is set on a boxing match against a man named Garcias. One of the bad guy's workers, a woman named Trixie, whispers she'll root for Cobra and kisses him. During the kiss, however, she bites his lower lip and Cobra comes to have a really hard time fighting because of her paralyzing venom.
- Male Gaze: Cobra comments on the appearance of some ladies he meets.
- The Name Is Bond, James Bond: Cobra literally introduces himself as "James Bond" to two cyborg executioners.
- Rocket Punch: Cobra's final attack against Crystal Boy, as in the manga.
- Unexpected Gameplay Change: Near the end, Cobra has to deal with enemies in turn-based battles that now have HP and MP mechanics.