How to Download Marshmallow Marvin: Grimvault

1. Click on the Marshmallow Marvin: Grimvault download button below.
2. Choose "Install" to install the game on the windows steam client.
3. Follow the on-screen prompts
4. Let it download the Full Version.
5. Once a game is downloaded, use the Windows Steam Client to play the game.

=== Download Game ====

Download for pc →

This guide describes how to use Steam Proton to play and run Windows games on your Linux computer. Some games may not work or may break because Steam Proton is still at a very early stage.

1. Activating Steam Proton for Linux:
Proton is integrated into the Steam Client with "Steam Play." To activate proton, go into your steam client and click on Steam in the upper right corner. Then click on settings to open a new window. From here, click on the Steam Play button at the bottom of the panel. Click "Enable Steam Play for Supported Titles."

Alternatively: Go to Steam > Settings > Steam Play and turn on the "Enable Steam Play for Supported Titles" option.

Valve has tested and fixed some Steam titles and you will now be able to play most of them. However, if you want to go further and play titles that even Valve hasn't tested, toggle the "Enable Steam Play for all titles" option.

2. Choose a version
You should use the Steam Proton version recommended by Steam: 3.7-8. This is the most stable version of Steam Proton at the moment.

3. Restart your Steam
After you have successfully activated Steam Proton, click "OK" and Steam will ask you to restart it for the changes to take effect. Restart it. Your computer will now play all of steam's whitelisted games seamlessly.

4. Launch Stardew Valley on Linux:
Before you can use Steam Proton, you must first download the Stardew Valley Windows game from Steam. When you download Stardew Valley for the first time, you will notice that the download size is slightly larger than the size of the game.
This happens because Steam will download your chosen Steam Proton version with this game as well. After the download is complete, simply click the "Play" button.

Windows Pc Requirements

Minimum:

• OS: Windows 11
  
• Processor: Dual Core
  
• Memory: 8 GB RAM
  
• Graphics: Integrated Graphics
  
• DirectX: Version 11
  
• Storage: 1 GB available space

Recommended:

• OS: Windows 11
  
• Processor: i3-8100
  
• Memory: 8 GB RAM
  
• Graphics: 1050ti
  
• DirectX: Version 11
  
• Storage: 1 GB available space

Linux Requirements

No minimum requirements!!
No maximum requirements!!

Mac Requirements

No minimum requirements!!
No maximum requirements!!

Marshmallow Marvin: Grimvault is a challenging 2D pixel art platformer where you guide Marvin through cursed vaults and haunted tombs, avoiding deadly traps, dodging automated turrets, collecting coins, and mastering precision platforming to uncover ancient secrets and survive the Grimvault.

Guide Marvin Through the Grimvault

Enter the cursed depths of Marshmallow Marvin: Grimvault and help Marvin survive a haunted underground vault filled with ancient traps, deadly turrets, shifting passages, and perilous platforms. In this 2D pixel art platformer, you guide Marvin through increasingly dangerous chambers while collecting coins, restoring health with hearts, solving platforming challenges, and uncovering the secrets hidden within the Grimvault.

Gameplay

Your objective is simple: reach the end of each level and survive the vault.

As you journey through each stage, you’ll leap across crumbling platforms, avoid deadly hazards, dodge enemy fire, and collect valuable items along the way. Coins reward exploration, while hearts restore Marvin’s health, giving them a better chance of surviving the dangers ahead.

The early levels introduce the core challenges and help you get comfortable navigating the Grimvault’s dark corridors. But as you progress, the vault becomes more dangerous. Levels grow more intricate, traps appear more often, and success depends on precise timing, quick reflexes, and smart decision making.

Every step deeper into the Grimvault brings new dangers, ancient secrets, and a greater challenge for Marvin to overcome.

Hazards and Challenges

The Grimvault is packed with deadly obstacles that will test your timing and precision:

Spikes that punish poorly timed jumps

Moving spikes that rise and fall, demanding careful movement

Automated turrets that lock onto Marvin and fire projectiles, forcing you to stay alert and react quickly

Treacherous platforms that require patience, timing, and control

Each new level introduces more complex layouts and a higher density of threats, pushing you to sharpen your skills and adapt your strategy.

A Haunted Vault Adventure

The game features a retro pixel art style that creates a nostalgic platforming experience while reinforcing the dark, mysterious atmosphere of the Grimvault. Haunted tombs, ancient relics, narrow corridors, and cursed chambers create a tense adventure where every jump could be Marvin’s last.

Risk, Reward, and Progression

Throughout the journey, you’ll constantly balance risk and reward:

Take dangerous routes to collect more coins

Play cautiously to preserve Marvin’s health

Time your jumps carefully to avoid traps and enemy fire

Explore deeper to uncover the Grimvault’s secrets

Completing each level brings a strong sense of accomplishment and pushes Marvin further into the cursed vault in their quest to survive its ancient dangers.

Key Features

Classic 2D platforming gameplay

Dark tomb and haunted vault setting

Challenging trap-filled levels

Coins that reward exploration

Health recovery through collectible hearts

Enemy turrets that dynamically target Marvin

Retro pixel art visuals

Increasing difficulty and more complex level design

Ancient relics, cursed chambers, and perilous puzzles

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