Developer
Rejected Games
Released
Sep 26, 2025
Price checked
55 minutes ago
Tracked since
Oct 8, 2026
Product code
app:3864310

Add-on Mr. Prepper

Mr. Prepper - Uranium Project DLC

  • Steam
  • PC

Description

Gain access to a long-abandoned nuclear power plant, manage unstable uranium to craft powerful tools and weapons, advance through a new storyline, and decorate your bunker in a whole new way!

Good day, Citizen!

In this DLC, you gain access to a long-abandoned nuclear power plant on the outskirts of town. Restore its reactors, manage unstable uranium, and harness atomic energy to power advanced structures, experimental tools, and secret projects. But beware: radiation isn't the only challenge. Can you master the atom before it masters you?

Key Features

• New Side Story (~15 hours) – A narrative expansion set around the nuclear power plant, with new quests and challenges

• New Location – Explore the power plant facility and uncover its hidden potential

• Powerful New Equipment – Gain access to advanced gear: Hazmat Suit, Hazmat Backpack, Pulse Rifle, Atomic Grenade, Anti-Radiation Extract

• Expanded Bunker Automation – Utilize high-tech machinery like the Nuclear Generator, Uranium Centrifuge, Auto Planter, Auto Harvester, and more

• Radiation and Hazard Mechanics – Deal with radioactive zones, debuffs, and mutated enemies using the new Geiger Counter system

• New Mine Levels – Discover four uranium-rich mine layers with new resources and challenges

• New Minigame – Use a remote-controlled crane to extract dangerous materials from sealed chambers

Additional Content:

   • 46 new items to collect and craft

   • Ammo crafting and seed production mechanics

   • Randomized side quests with dynamic rewards

   • A new NPC tied to the story

   • 15 new achievements to unlock

Bless the President!

PC requirements

Minimum

OS
Windows ® 8/7/Vista/XP
Processor
3.2 GHz Dual Core Processor
Memory
4 GB
Graphics
nVidia GeForce 520M or Intel HD 4000
DirectX
9.0c
Storage
5 GB

Recommended

OS
Windows 7 64-bit or newer
Processor
3.2 GHz Quad Core Processor
Memory
6 GB
Graphics
GeForce 970, Radeon RX 580 or equivalent with 4GB of video RAM
DirectX
11
Storage
5 GB
Best price
$3.40
Russia Russia ₽280
Buy in Steam

In your region $6.99 106% more

Ratings

Steam reviews Mixed 57% · 35 reviews

About the game

Developer
Rejected Games
Released
September 26, 2025
Official site
ESRB T

Age rating

Violence

Languages 14

LanguageMenusVoiceSubtitles
English
Russian
Brazilian Portuguese
Czech
Dutch
French
German
Italian
Japanese
Korean
Polish
Simplified Chinese
Spanish
Turkish

Install size

Xbox One
1.5 GB

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