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New Game Alert: Alter Ego!
December 4, 2014 at 2:32 am

Lee Weber aka D3thAdd3r just released his latest masterpiece, a port of the indie game Alter Ego, a unique platform puzzle game! Players use their alter ego to swap position, collect pixels, [...]

Uzebox 3D printed enclosure officially released!
November 28, 2014 at 9:23 pm

The Uzebox custom 3D printed enclosure is officially released! It fits perfectly the Uzebox PCB and Uzebox kits sold by Adafruit. All parts can be printed on a conventional extrusion based [...]

New Game Alert: Joyrider!
November 11, 2014 at 12:19 am

Jhhoward released his first game for the Uzebox! Joyrider is an action / driving game in the style of the original Grand Theft Auto and Driver games. It features several game [...]

New Game Alert: Holey Moley!
November 11, 2014 at 12:11 am

Ellipsis just released his first game for the Uzebox! In Holey Moley, you are a mole with a jetpack! Dig as deep as you can and grab all the cash [...]

New Game Alert: Melli’s Retro Land!
November 10, 2014 at 11:51 pm

Grobian99 just released his first game for the Uzebox! In one of the rare side scrollers on the Uzebox, you take Melli though 8 levels, stomping enemies and collecting diamonds! [...]

More News...

The Uzebox is a retro-minimalist 8-bit open source game console. It is based on an AVR 8-bit general purpose microcontroller made by Atmel. The particularity of the system is that it uses an interrupt driven kernel and has no frame buffer. Functions such as video signal generation, tile rendering and music mixing is done in realtime by a background task so your game can easily be developed in C. The design goal was to be as simple as possible yet have good enough sound and graphics to implement interesting games. Emphasis was put on making it easy and fun to assemble and program for any hobbyists. The final design contains only two chips: an ATmega644 and an AD725 RGB-to-NTSC converter.

Current Features
  • Low parts count and cost: The system is made of only two chips and discrete components.
  • Interrupt driven kernel: No cycle counting required, sound mixing and video generation are all made in the background.
  • 256 simultaneous colors: Accomplished by using a simple weighted resistor DAC.
  • 5 channels sound engine: The sound subsystem is composed of 3 wavetable channels, 1 noise channel and 1 PCM channel mixed at 15.7Khz.
  • MIDI In: With a music sequencer, allows the creation of music directly on the console.
  • Retro controllers: The joypad inputs uses standard NES/SNES controllers interface.
  • SNES Mouse Support
  • SD/MicroSD card interface
  • Expandable: I/O lines and peripherals are still available, like the UART and SPI port for one to experiment.
  • Emulator: A fully cycle-perfect emulator that support GDB debugging.
  • Gameloader: 4K Bootloader that loads and flash games stored on SD cards!
  • API: Develop games using an API that provides multiple video modes, sound driver and more.
  • Open Source: The software and hardware design are totally free and licensed under the GPL.

CPU: ATmega644 microcontroller
Total RAM: 4K
Program Memory: 64K
Speed: 28.61818Mhz (Overclocked)
Colors: 256 simultaneous colors arranged in a 3:3:2 color space (Red:3 bits, Green:3 bits, Blue: 2 bits)
Resolution: Up to 360x224 pixels (tiles-only and tiles-and-sprites modes)
Sprites: Up to 32 simultaneous sprites on screen at any time
Video output: NTSC Composite and S-Video (Works without changes on most PAL/SECAM TVs)
Sound: 5 channels, 8-bit mono, mixed at ~15Khz and output via PWM
Inputs: Two NES/SNES compatible joypad inputs
Options: MIDI-in interface


These videos demonstrates some of the features of the Uzebox. The first one is a Tetris clone named "AVR Megatris". The game is fully functional and implements most of the official "Super Rotation System" (SRS) system complete with hold block, t-spins and ghost even plays classic Tetris songs!

Megatris Movie Uzebox AVCore Movie ESD Attack Movie Moon Patrol Movie Halloween Demo Movie Music Engine Demo Video Player Demo Uzebox Games Recap
Buy Uzebox Kit at Adafruit
Buy EUzebox Kit
Latest Stable Version: 1.19.1
Features   Download(Win32)   Sources
Megatris Thumb
Alter Ego Thumbnail
Alter Ego Title
Lee Weber

SubMarine Thumb
SubMarine Title
Dominik Kristen

Frogger Thumbnail
Frogger Title
Paul McPhee

SpaceAge Thumb
SpaceAge Title
Pitfall Jones


mellisretroland Thumb
mellisretroland Title

Simon Thumb
Simon Title
Hartmut Wendt

Atomix Thumb
Atomix Title
Martin Šustek

Corrida_Nebososa Thumb
Corrida_Nebososa Title
Flavio Zavan

Pipes Thumb
Pipes Title
Hartmut Wendt

Lode Runner Thumb

All Games and Demos...

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Copyright (c) Belogic
The Uzebox (including source code and hardware design) is released under the GNU GPL 3.0 Public Licence.
Pictures and content of this site is licensed under a Creative Commons Attribution-Share Alike 3.0 Unported License.
Uzebox is a reserved trademark.