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About The Callisto Protocol
The Callisto Protocol™ is a narrative‑driven, third‑person survival horror set 300 years in the future on Jupiter’s dead moon, Callisto. Players assume the role of Jacob Lee, an inmate in the maximum‑security Black Iron Prison, where a mysterious outbreak turns prisoners into monstrous creatures.
The game blends shooting and close‑quarters combat, requiring players to scavenge for weapons, gear and abilities while uncovering the dark secrets of the United Jupiter Company. Its atmosphere emphasizes isolation, tension and brutal, strategic encounters in a hostile, isolated environment.
01 / THE GUIDE
Narrative and Setting
The story unfolds in the year 2320 on Callisto, a dead moon orbiting Jupiter. Jacob Lee, a victim of fate, is thrust into Black Iron Prison, a maximum‑security penitentiary where an outbreak transforms inmates into grotesque monsters.
The narrative drives the player to uncover the United Jupiter Company’s hidden secrets while surviving the chaos. The setting’s isolation amplifies the horror, with threats both above and below the moon’s surface.
- Observe environmental details for clues about the outbreak.
- Compare early prison areas with later zones to track narrative progression.
02 / THE GUIDE
Combat System
Combat mixes hand‑to‑hand and ranged tactics, demanding players adapt to rapidly evolving creatures. Players can hack off limbs, blast off legs and improvise with any available tool to survive life‑or‑death encounters.
The system emphasizes brutal, strategic engagements, encouraging creative use of weapons and close‑quarters attacks to overcome the bloodthirsty foes stalking Jacob.
- Experiment with limb‑targeting to reduce enemy threat.
- Balance ranged fire with melee to conserve ammunition.
03 / THE GUIDE
Gravity Weapon
A unique gravity weapon, once used by Black Iron guards, is available for players. This tool can manipulate enemies, adding a distinct tactical layer to encounters.
Its inclusion expands combat options, allowing players to control or disrupt foes in ways that standard firearms cannot, reinforcing the game’s strategic depth.
- Test the gravity weapon on different enemy types to gauge effectiveness.
- Combine gravity attacks with melee for combo opportunities.
04 / THE GUIDE
Isolation of Callisto
Callisto presents one of the most hostile, isolated environments in the universe. Players must contend with the prison’s internal threats and the moon’s centuries‑old secrets, both above and below the surface.
The isolation intensifies the horror experience, as the environment itself becomes a constant source of tension and danger, shaping player strategy and survival.
- Use environmental cues to anticipate hidden hazards.
- Compare surface and underground areas for resource differences.
05 / THE GUIDE
Features: Achievements and Cloud
The game supports single‑player play with Steam Achievements, allowing players to track milestones. Steam Cloud integration ensures progress is saved across sessions.
Full controller support is provided, and Family Sharing lets multiple accounts access the game, enhancing accessibility without altering core gameplay.
- Check the achievement list to set personal goals.
- Enable Cloud sync to protect progress when switching devices.
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