GB Doom

4.4 / 5

36,214 plays

simulation

Game Information

Developer: SZ Games

Rating:

4.4/5

Released: April 2024

Last Updated: June 2025

Technology: HTML5 (Unity WebGL)

Platform: Browser

Size: ~15 MB

Plays: 36,214

Mobile Support: No

About GB Doom

Gear up for a pixel-packed thrill ride in GB Doom, a uniquely challenging simulation that blends retro Game Boy aesthetics with the relentless spirit of classic DOOM. Designed as a learning experiment using GB Studio, GB Doom stands out as an ultra-indie, browser-based experience for players craving both nostalgia and a good challenge. Every level is steeped in moody, limited-palette pixel art inspired by DOOM, reimagining the iconic shooter vibe through a Game Boy lens.

Jump straight into fast-paced, hard-as-nails action. Every step is laced with suspense as you navigate labyrinthine corridors, dodge pixelated monstrosities, and strategize your survival with single-minded intensity. True to its roots, GB Doom doesn’t just test your reflexes—it pushes you to think like a developer. The creator has generously shared all source files and custom sprites, inviting curious players and aspiring game designers to not only play, but to build and remix their very own versions.

Unleash your creativity by customizing GB Doom—tweak levels, change sprites, or even overhaul the gameplay entirely. Experimenting with the assets is as easy as downloading them from itch.io. Whether you’re a die-hard DOOM fan, a retro lover, or simply game development-curious, GB Doom offers a bite-sized, yet challenging journey into another dimension of indie passion.

No mobile compatibility means you’ll experience GB Doom as it was meant to be: on your browser, armed with heart and a keyboard. Dive in for a flashback to the golden days of handheld gaming, sharpen your skills with each attempt, and unlock the thrill of creating your own digital worlds. For gamers and creators alike, GB Doom is more than a game—it’s an entry point into building the games of tomorrow.

How to Play

Start your GB Doom adventure by launching the game directly in your preferred browser via itch.io—no installations needed. Once loaded, you’ll be greeted by a minimalist Game Boy interface with tight, moody visuals. Use the arrow keys to maneuver your pixel hero through compact, maze-like levels. Your mission: survive, escape, and outwit hostile entities lurking in each shadowy corner.

Navigation is vital—pay close attention to dead ends and looping corridors. Precision and timing are your best friends, especially since this simulation purposely dials up the difficulty. If you encounter foes, use the action key (usually Spacebar or Z) to interact, defend, or tackle puzzles, depending on the level. Every move counts; hesitation or rash decisions are quickly punished.

As you progress, experiment with the included downloadable assets. Simply access the source files provided on the game page, and follow the instructions to modify levels or even create your own pixel art. It’s a hands-on way to learn the basics of GB Studio and game development while playing.

Tip for beginners: take your time to memorize the layout and enemy patterns. Creativity is encouraged, so don’t hesitate to remix and share your own version with the community. The experience is short but packed with challenge and limitless replayability through user-generated content.

Controls

mouse

keyboard

Tips & Tricks

Study enemy movements to avoid unexpected ambushes.
Focus on mapping the maze in your mind to prevent getting lost.
Practice quick reflexes to survive tight situations and sudden threats.
Use the downloadable sprites to customize your hero and levels for a fresh experience.
Replay levels to discover hidden shortcuts and optimize your runs.
Don’t rush—mastery comes through trial and error in this hard difficulty sim.
Check the included code to learn valuable GB Studio programming basics.

Game Features

Ultra-retro Game Boy inspired pixel visuals and atmospheric design.
Hardcore simulation gameplay for a true old-school challenge.
Fully downloadable source files and sprites for unlimited customization.
Runs smoothly in-browser—no setup or plugins required.
Community-driven remixing opportunities through open assets.
A learning playground for aspiring indie developers.
Authentic DOOM-inspired mood injected with indie charm.

Frequently Asked Questions

Is GB Doom free to play?

Absolutely! GB Doom is completely free to play online via itch.io, and you can also download all the assets and source files at no cost.

Can I play GB Doom on my mobile device?

Currently, GB Doom is not mobile compatible. It’s designed for browser-based play on desktops or laptops for the best experience.

How challenging is GB Doom?

GB Doom is purposefully designed to be hard, testing both your reflexes and strategic planning—perfect for players who seek a tough retro challenge.

What can I do with the source files provided?

The creator has included all source files and custom sprites, giving you the freedom to modify, remix, and even build your own unique version of GB Doom using GB Studio.

How do I get started with customizing the game?

Simply download the provided source files from the game’s itch.io page. Open them in GB Studio, experiment with pixel art, and create new gameplay elements as you learn the ropes of indie game development.