Marshmallow Marvin: Grimvault

Marshmallow Marvin: Grimvault

Jolly Lobster Interactive LTD · 2026 · Action, Adventure, Casual, Arcade, Platformer

PC
1 user reviews100% · 1
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$4.49-10%
$4.99lowest tracked $2.49
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Standard Edition · Steam
-10%
$4.49
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Standard Edition · Microsoft Store
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About Marshmallow Marvin: 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 jumpsMoving spikes that rise and fall, demanding careful movementAutomated turrets that lock onto Marvin and fire projectiles, forcing you to stay alert and react quicklyTreacherous platforms that require patience, timing, and controlEach 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 coinsPlay cautiously to preserve Marvin’s healthTime your jumps carefully to avoid traps and enemy fireExplore deeper to uncover the Grimvault’s secretsCompleting 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 gameplayDark tomb and haunted vault settingChallenging trap-filled levelsCoins that reward explorationHealth recovery through collectible heartsEnemy turrets that dynamically target MarvinRetro pixel art visualsIncreasing difficulty and more complex level designAncient relics, cursed chambers, and perilous puzzles

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