Outbreak: Containment Lost

Outbreak: Containment Lost is a 1.20.1 Forge infection-survival modpack focused on a spreading outbreak, harsh survival, immersive sound, dangerous exploration, and long-term progression.

The world has fallen into containment failure. Infection is spreading, cities are abandoned, supplies are limited, and survival is no longer just about fighting. You will need to manage thirst, temperature, food, shelter, weapons, and resources while the outbreak continues to grow around you.

What to expect

• A dangerous infection-focused survival experience

• Realistic survival mechanics like thirst, temperature, and harsher health systems

• Immersive sound design with footsteps, ambience, and realistic audio effects

• Early-game medieval weapons, shields, bows, and armor

• Mid-to-late-game firearms and tactical gear

• Abandoned cities, ruins, structures, bunkers, and exploration zones

• Horde pressure and dangerous infected encounters

• Quests and progression to guide you through survival, containment, and recovery

• Tech and base-building progression for long-term worlds

• Optimization mods included to help performance in a large modpack

Gameplay style

You will not start as an overpowered soldier. Early survival is meant to feel rough. You begin with basic tools, melee weapons, food, water, and shelter. As you progress, you can find stronger weapons, build better defenses, unlock guns, improve your base, and work toward surviving the outbreak.

Main theme

Survive the infection.
Build your shelter.
Explore the ruins.
Contain the outbreak.