The Tool Desk
Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Yes—but not in the way the headline first suggests. Maker James “Ancient” Brown built a custom LEGO-brick-shaped computer around a Raspberry Pi RP2040, a 0.42-inch monochrome OLED, custom circuit boards and unconventional controls, then adapted an RP2040 DOOM port to run on it. The result is a genuine miniature DOOM machine, not a standard LEGO brick with software installed inside it—and it is technically playable rather than practically comfortable.
What the LEGO DOOM brick actually is
Hackaday reported the project under the exact title “DOOM Ported To A Single LEGO Brick” on March 18, 2023. Brown, who uses the name “Ancient” online and is described in coverage as a maker and Weta Workshop graphics engineer, created a custom electronic assembly molded into a LEGO-compatible brick-like form.
As an Amazon Associate I earn from qualifying purchases.
That distinction matters. This is not an unmodified retail LEGO element, an official LEGO product or a normal computer hidden inside a hollow toy brick. It is a miniature computer designed around the brick’s geometry, with its electronics sealed in resin or epoxy. “Single LEGO brick” is best understood as shorthand for a single custom LEGO-brick-shaped device.
Hardware inside the brick
The reported design combines several components that would normally be spread across a development board and peripheral hardware:
#1 Best Overall
- Engage your kids in pretend play by letting them build their own play toys, such as creating a toy house or toy scooter. This classic creative kit of LEGO bricks comes includes 33 different colors of bricks
- This brick box includes 8 different types of toy windows and toy doors, 2 green baseplates and 6 toy tires and toy wheel rims to create hours of creativity for kids
- Kids will become creative builders as they use these color toys to build a figure or build a castle while also engaging in kids playtime
- The large build and play LEGO Creative Brick toy playset is compatible with all LEGO construction sets for never-ending creative play
- The green baseplates in this build it yourself set measure over 6-inch long and 6-inch wide, and 4-inch long and 2-inch respectively. Kids will get to build and play with 790 pieces and is ideal for boys and girls of any age
- Raspberry Pi RP2040: the dual-core microcontroller running the game software.
- 0.42-inch monochrome OLED: a screen measuring roughly 72 × 40 pixels.
- Custom PCBs: multiple panels arranged as a three-dimensional electronic frame rather than one conventional flat board.
- Flash storage, crystal oscillator, voltage regulation and diodes: the supporting circuitry needed to make the embedded computer operate.
- Accelerometer: used for tilt-based input in the playable version.
- Capacitive-touch controls: the brick’s top studs act as touch-sensitive inputs.
- USB and electrical contacts: used for power or connection depending on the project iteration.
- Resin or epoxy enclosure: the electronics are encapsulated to create the finished brick-like object.
The tiny OLED is the most obvious limitation. At 72 × 40 pixels and in monochrome, it cannot show DOOM anything like a conventional handheld display. Walls, corridors, enemies and the status bar are recognizable, but the image is severely compressed and highly dependent on brightness, resin clarity, lighting and viewing angle.
How can an RP2040 run DOOM?
The underlying software is RP2040 Doom, a port derived from Chocolate Doom for RP2040-class hardware. Its documentation specifically identifies support for the shareware DOOM1.WAD. That does not mean the device runs every DOOM release, DOOM II, Final DOOM or the complete catalog of id Software games.
The port has to work within the RP2040’s memory, storage and processing constraints. The repository uses specialized data handling to accommodate the shareware WAD, while the LEGO project also required a different rendering path for its OLED rather than simply outputting to a normal VGA display.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Because the display is monochrome, the brick’s software uses rapid screen updates and grayscale techniques. Hackaday describes the result as using three grayscale levels, helping separate parts of the scene despite the screen’s extremely low resolution. The impressive part is not that a modern game has been squeezed into the brick; it is that a specialized classic-game port can be made to execute, render and accept input on this combination of microcontroller and miniature display.
Rank #2
- Fun and Engaging - Kids will spend hours engaging in pretend play with this medium-sized building kit. Create toy trains or tiger figurines with this classic collection of LEGO bricks in 35 different colors
- Endless Builds - This creative toy for boys and girls includes windows, toy eyes, 18 tires and toy wheel rims that can be placed on a green baseplate for kids to role-play; plus the container can be used as toy storage
- Imaginative Play - Kids can use their imagination, picking an assortment of bricks to bring to life any building toy they want with these colorful toys, fostering kids' playtime and building creativity throughout the process
- Cross Compatible - Kids won't have to stop the role play with just the LEGO Creative Brick playset as these building toys are compatible with all LEGO construction sets.
- Fun for Everyone - In this 484-piece kit, the green baseplate measures over 3 inches long and 6 inches wide; for boys and girls between the ages of 4 and 99 years old
How are the controls operated?
The control system abandons a conventional gamepad. The player tilts the brick, with the accelerometer supplying movement or aiming-related input, and touches the studs on top for additional actions such as shooting. Reports from Raspberry Pi’s MagPi coverage and Hackaday document the arrangement, although the exact mapping should be treated as specific to the maker’s build rather than a universal control scheme.
It is an inventive interface, but not an ergonomic one. There is no room for full-size buttons, a joystick or a conventional grip. Contemporary coverage characterizes the controls as imperfect and the game as only “just barely” playable. In other words, the device demonstrates that DOOM works; it does not turn a LEGO brick into a good replacement for a handheld console.
The physical engineering may be harder than the software
Making the brick-shaped hardware was a miniature manufacturing problem. The documented construction process involved designing PCB panels around the enclosure geometry, populating them, soldering the panels into a three-dimensional frame and using jigs to keep the parts aligned.
Free tools Windows power users keep installed
One-click scans. No signup required.
Brown then created a silicone mold and cast the assembly in resin or epoxy. The display had to remain visible through the enclosure, with MagPi reporting a resin layer of roughly 0.1 mm over the screen in the documented construction. Too much material would consume precious space or make the image harder to see; too little would compromise the finish and protection.
Rank #3
- BIGGER PACKAGE OVER 3.6 LBS - The Mannidoo brick box includes over 1600 high-quality building bricks, featuring 18 different shapes, 14 classic colors, and 2 special transparent colors. Additionally, it comes with a bonus pack of 46 wheels, tires, axles, and 2 packs of grey/green adhesive baseplates for extra fun.
- CERTIFIED SAFE - All 1600+ regular bricks are made from non-toxic ABS material, ensuring they are burr-free and easy to clean. The manufacturing process is strictly controlled to meet US toy safety standards.
- CREATIVE PLAY - Children can unleash their creativity by selecting from a variety of our bricks to build any toy they imagine with these colorful blocks, encouraging imaginative play and nurturing creativity throughout the activity.
- TOP PICK FOR CHILDHOOD GIFTS - This tightly fitting brick set is an excellent starter kit for kids and is fully compatible with all major brand building blocks(Lego for sure), allowing children to mix and match with bricks they already have. It's the perfect gift for family gatherings, kindergarten and preschool classroom events, birthdays, Christmas, and Easter.
- MANNIDOO OPTION: Compare with other brands, We are committed to provide 60 days MONEY-BACK for any any reason and a 180 days MONEY-BACK for quality-related issues. With Mannidoo, you can get cheaper, thicker, sturdier building bulks.
Resin also creates a major trade-off. It gives the device its rigid, convincing brick-like appearance and protects the electronics, but it makes repair and rework extremely difficult. A failed component, bad solder joint or trapped defect discovered after casting can effectively mean rebuilding the device. The project reportedly involved about four months of failures and iteration.
Was it always a self-contained DOOM computer?
No. The project evolved, and different reports describe different stages.
- June 2022: early demonstrations showed a tiny LEGO-style display receiving DOOM output from another system. At this stage, the brick functioned primarily as an external monitor.
- Late 2022: reporting connected the project to RP2040-based DOOM software and described the hardware and display more fully.
- March 2023: Hackaday covered the playable configuration with local RP2040 execution, tilt input and capacitive-touch controls.
- Later development: further work explored a more self-contained battery-powered arrangement and related configurations, including an additional brick-like module beneath the main unit.
This timeline explains why some descriptions mention external video, USB power or an accelerometer while others describe a more independent computer. They are not necessarily contradictory; they refer to different iterations of the prototype.
Do these 3 things before closing this tab:
1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteHow was it powered?
Power details vary by version. The MagPi account describes external USB power in the documented build, while electrical contacts were also part of the miniature design. Brown explored fitting a rechargeable battery inside the limited space, but the battery, USB connector and other electronics competed for the same volume.
Rank #4
- 【Pink Palace Building Blocks】This pink palace building block set comes from the movies. The package contains 1349 building blocks, and the finished size is 12 x 7.2 x 12.4 inches, which perfectly restores the movie scene. It is a perfect decoration for desks and Halloween
- 【Well-designed details】This pink palace is three stories high, with a light pink exterior wall, which looks very cute. The doors, windows, stairs, roofs and fences are all decorated with exquisite carvings and details. There are several small dome windows on the roof, which adds some fairy-tale atmosphere to the whole building
- 【Classic Reproduction】The reverse side uses an open half-house structure, and players can directly see the detailed interior decoration, as well as discover several iconic scenes in the movie, such as: piano room, kitchen, attic, bedroom, living room, etc
- 【Lighting Design】This Pink Palace set comes with a warm and thoughtful lighting kit, which adds a festive atmosphere to your Halloween scene, and is also a great Christmas decoration for children, adults and families
- 【Safe and reliable materials】This building block toy is made of high-quality ABS material with smooth edges, durable, washable, and compatible with classic building block toys. It meets child safety standards and is harmless to children's health, so please feel free to use it!
Later coverage from Hackster describes a more self-contained iteration with a tiny battery and accelerometer, though some components were placed in an additional lower brick-like module. It is therefore inaccurate to claim that every version was battery-powered and entirely contained within one standard-sized brick.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Is it really running DOOM, or only showing a video?
The answer depends on which version is being discussed. The earliest display demonstrations involved DOOM being rendered elsewhere and sent to the tiny screen. Later versions used the RP2040 Doom software locally and added controls, making them genuine miniature DOOM computers rather than passive displays.
The most accurate description is that this was an evolving prototype: it began as a tiny DOOM display and developed into a custom RP2040-based device capable of running a supported DOOM build locally.
Quick wins for a faster PC:
Repair Windows errors before they cause bigger problemsFix Now →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →Could you build one?
In principle, yes. As a beginner project, no. The public RP2040 Doom releases provide a legitimate software starting point, but downloading the repository will not reproduce Brown’s brick. The cited coverage does not establish a complete public schematic, full bill of materials, exact PCB Gerbers, final firmware commit, OLED pin mapping, accelerometer model, touch circuit, battery specification or mold design for the finished device.
Best Value
- This flowers house building set features a city coffee shop design that captures the essence of morden living. With 1443 pieces,provides a fun and challenging building experience for all ages
- Great gift for people who love assemble square architecture building.Every floor is detachable, allowing the kids easy access to the interior for play and display
- This flowers house coffee shop building kit comes with easy reading instruction booklet and bricks in numbered.Made of the same ABS plastic as the classic brand with smooth edges.They are durable,light,safe and washable
- Perfect choices for kids' birthday gifts, christmas gifts, new year's gift,themed parties, party favors, classroom prizes, rewards, giveaways, and else.Rated for older child 8,9,10,11,12,13 and 14 up Year Old
- Package box size:12.60*11.02*3.74 inch. The city coffee shop: 10.04*6.89*11.42 inch
A sensible build path would be to start with a supported RP2040 development board, confirm the firmware and legally obtained game data, then add a small monochrome OLED. Only after the larger prototype works should a builder adapt the renderer, add tilt and touch input, design a custom miniature PCB and attempt resin encapsulation.
A replica would require fine-pitch soldering, precision fixtures, custom board fabrication, display-driver work, sensor integration, mold-making and repeated failed iterations. Retail breakout boards are useful for experimentation but are generally too large for the finished enclosure.
Can you buy the finished brick?
There is no verified retail LEGO DOOM product established by the cited reporting. An earlier report said Brown had not indicated plans to sell the device, and the project’s custom fabrication requirements make it unlike an off-the-shelf kit. Do not confuse ordinary LEGO bricks, third-party “screen bricks” or official LEGO electronics products with this specific maker build.
For readers who want the software experiment rather than the extreme enclosure challenge, a Raspberry Pi Pico or another supported RP2040 development board is the practical alternative. It is easier to program, debug, power and repair, even if it lacks the visual novelty of a resin-cast game running inside a brick.
What the project proves
The project’s achievement is not simply that DOOM can run on a small microcontroller. It combines a constrained RP2040 port, a 72 × 40 monochrome display, three-dimensional custom electronics, experimental controls and a nearly unrecoverable resin-casting process into one coherent object.
So the headline is genuine with an important qualification: DOOM was ported to a custom LEGO-brick-shaped computer. It is a remarkable proof-of-concept and a fascinating hardware hack—not a comfortable gaming system, an official LEGO release or a turnkey build anyone can assemble by downloading one file.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
Recommended Free Tools
