Mr. Prepper - Mountaineer DLC: What's New, Price and Is It Worth It

The Mountaineer DLC for Mr. Prepper launched on Steam on October 17, 2026. It adds a new mountain location with 10 levels built around climbing, cold survival and a voice-acted story, plus a set of new bunker machines, and it costs $6.29 during its launch discount (base game required). Below is what’s in it, what it costs, and how to get going once it’s installed.

What the Mountaineer DLC is

Mr. Prepper is Rejected Games’ survival-crafting game about building an underground bunker and preparing to escape a paranoid, authoritarian regime. Mountaineer is the latest paid expansion, following earlier add-ons such as the Uranium Project and Animal Farm DLCs.

According to the official Steam store page and the developer’s launch announcement, the DLC sends Mr. Prepper to a mysterious mountain full of dangerous climbs, hidden secrets and freezing temperatures. Deku Deals lists Rejected Games as developer and PlayWay as publisher.

Quick facts

What’s new in the expansion

A climbing-focused location

The core of the DLC is vertical exploration. Getting up the mountain means using ropes, pitons, platforms, climbing chalk, an ice axe and hiking gear. That’s a different rhythm from the base game’s scavenging trips, where the challenge is mostly what you carry and who spots you.

Cold as a survival mechanic

The developer says the higher you climb, the colder it gets. You’re expected to prepare with winter clothes, thermoses and heat packs before you head up. In practice that turns each ascent into a packing puzzle: climbing gear, warmth and supplies all compete for space.

Story: the climber on the radio

You follow the footsteps of an experienced climber who talks to Mr. Prepper through voice-acted walkie-talkie messages. She reveals her own story as she guides you higher, and along the way you uncover the secrets of the Agency’s Cryotech experiments. The store page doesn’t give her name or how long the story runs, so we won’t guess.

New enemy, weapon and loot

• The Puma, a new enemy that lives on the mountain.
• The Cryotech Tesla Coil Gun, described by the developer as a powerful new weapon.
• New materials, recipes and skill books to bring back to the bunker.

New bunker machines

Back home, the expansion adds six machines:

• Elevator
• Ice Cream Machine
• Freeze Dryer
• Automatic Storage Sorter
• Titan Furnace
• Cryo Sleep Pod

The sources list these by name only. Exact recipes, resource costs and unlock conditions weren’t published in the material we reviewed, so expect to discover those in-game. Several of them (the storage sorter and elevator in particular) sound like quality-of-life upgrades for a big bunker, but that’s our read of the names rather than a confirmed description.

Free Cooking Update 2.0

The launch post also mentions a free Cooking Update 2.0 released at the same time. It isn’t part of the paid DLC, so base-game owners should get it as a regular update. We couldn’t find a full changelog for it at the time of writing.

Price, bundles and platforms

On Steam the DLC is listed at $6.99, with a 10% introductory discount to $6.29. SteamDB shows the offer ending on October 31, 2026. Regional prices differ, so check the store in your own currency.

If you don’t own Mr. Prepper yet, Steam also sells a Complete Edition bundle that includes the base game, its DLCs and the soundtrack. Bundle pricing depends on what you already own, since Steam discounts items you have, so look at the price shown on your account.

Consoles: Earlier Mr. Prepper DLC has come to consoles (Animal Farm, for example, is on the Xbox Store), but as of October 18, 2026 we found no announced console release for Mountaineer. Deku Deals has a listing for it but shows no price. If you play on Switch, PlayStation or Xbox, watch the official store pages for your platform rather than assuming a date.

How to get and start the Mountaineer DLC

1. Make sure you own Mr. Prepper on Steam. The DLC won’t run without it.
2. Open the Mountaineer DLC store page and buy it (or buy the Complete Edition if you’re starting from scratch).
3. In your Steam library, right-click Mr. Prepper, choose Properties > DLC and confirm Mountaineer is ticked as installed.
4. Let the game update. The October 17 patch that adds the DLC also includes the free Cooking Update 2.0.
5. Launch the game and look for the new mountain location. The sources don’t spell out exactly where or when it unlocks in a save, so if you don’t see it right away, progress your current run or check the game’s Steam discussions for confirmed answers.

Only buy keys from Steam or an authorized retailer. Cracked “free” copies of the DLC are piracy, frequently bundled with malware, and won’t get updates.

Tips before your first climb

These are practical suggestions based on what the developer has described, not datamined numbers:

• Pack for cold first. The developer explicitly warns that temperature drops as you climb, and names winter clothes, thermoses and heat packs as the answer. Treat warmth like you treat food and water.
• Bring more climbing consumables than you think. Pitons, rope and chalk are listed as climbing tools, and running short halfway up a route is the kind of thing that ends runs.
• Expect a new threat. The Puma is the mountain’s new enemy, so don’t head up without a way to defend yourself.
• Plan bunker space. Six new machines take room. If your bunker is already crowded, the new Automatic Storage Sorter and Elevator may be worth prioritizing once you see what they need.
• Listen to the radio. The walkie-talkie messages are both the story and your guide up the mountain.

Is it worth it?

At $6.29 during launch week, Mountaineer is a small purchase that adds a genuinely different activity (climbing and cold management), a new story thread tied to the Agency, and a batch of bunker machines. If you’ve finished the base game and want a reason to start a new bunker, it’s an easy pick. If you mostly enjoy Mr. Prepper for base-building, the machines alone may justify it.

The honest caveat: as of October 18, 2026, the DLC is a day old, and we haven’t seen independent reviews or a player-review score we could cite. Check the recent reviews on the Steam page before you buy, and keep in mind that content details, prices and platform plans can change after launch.