JULY 5 - 7

  Atari competitions
This year we have a total of five competitions: Demos that work on our compo hardware will be run live on the machines while other Atari platforms will need a video recording to be submitted as well.
We will display full specifications of the hardware requirements as well as file size/resolution before it's shown.

Remote entries
You can send us remote entries via e-mail (use a suitable subject so we don't miss it by mistake). Please tell us in your mail which machine and compo the production is aimed for. Don't forget to make a video available if the production is for a system we don't have at hand.
Send entries to:
Thanks in advance for your participation!

For the most recent timetable with deadlines, please refer to the main page.

Compo hardware
These are the machines we will provide for the competitions; if your contribution is for another Atari machine, please submit a recording that we can play.
Atari 8-bit
  • Atari XE
  • 1MB RAM (Ultimate)
  • SD2SIO
Atari ST/STe
  • Atari STe machine
  • TOS v1.62 (or if you require, 2.06)
  • 4MB ST-RAM
  • 8 MHz 68000
  • Floppydisk (Gotek HxC)
  • UltraSatan/CosmoSEX SD harddrive (HDdriver)
Atari Falcon 030
  • TOS v4.04
  • 14 MB ST-RAM
  • 68030/68882 at 16 MHz
  • SSD IDE harddrive (HDdriver)
  • VGA or RGB
Atari Falcon 060
  • CT60-TOS v1.05
  • 14 MB ST-RAM
  • 256 MB TT-RAM
  • 68060 with FPU at 66 MHz
  • SSD IDE harddrive (HDdriver)
  • VGA or RGB

THEMED COMPO #01 - The Starfield

In previous years, we've had one bitplane, twist and a big border competition.
Here's the themed demo compo for 2019!
We hope the compo will be easy to enter, but hard to win.
  • The demo must feature two or more stars
  • Must work on 512k RAM
  • Must work on Atari ST
  • Several entries per person or crew is allowed

THEMED COMPO #2 - The PI3 photograph

It's the first time we do a photo competition at Sommarhack. We hope that people who usually don't participate in demo, graphics or music will find a home here.
The PI3 photo means that the image should load in Degas Elite with ST-HIGH resolution. That is a little bit of a limitation!
  • Colours: Black and white (no greyscales or other colours!)
  • Resolution: 640*400 (no more, no less)
  • Format: Degas Elite PI3
  • Several entries per person is allowed
Note: If you are unable to save your image in PI3 format, we also accept submissions in PNG or GIF formats (no JPEG!). The pictures will be saved as PI3 and will be shown in Degas Elite software during the competition.

Update June 9, 2019:
To help converting images to PI3, we made a quick tool for the Atari which does the job. Feed it an 8-bit BMP with col0 black and col1 white in 640*400 resolution.
Download BMP2PI3 v1.1 for Atari machines.


REGULAR COMPO #01 - Combined demo/intro

This is a combined competition and we will make sure that all hardware specifications as well as size of the demo is shown before it runs. You can enter any kind of Atari demo here, no limits!
  • Any Atari platform allowed, if your demo or intro is for an Atari platform not available at the party, please supply a video along with the native executable
  • Filesize, system and memory demands are open, but will be disclosed in detail before and after the entry is shown
  • Several entries per person or crew is allowed

REGULAR COMPO #02 - Combined graphics

We allow any kind of Atari graphics, if it is for an unsupported Atari platform, please provide a PNG image along with the native format.
  • We aim to display pictures in the native editor such as Degas Elite, EscPaint or Neochrome.
  • Custom formats are allowed and welcome, you need to provide an executable.
  • GIF, TARGA and JPEG images will be displayed on a Falcon with APEX viewer.
  • More than one entry allowed.

REGULAR COMPO #03 - Combined music

As with the graphics competition, we allow any format that is playable on an Atari. If the music is for some Atari machine that we don't have at the party, please send a recording along with the native version of the music.
  • We try to play the music in the used editor; if possible please supply a tracker loadable file.
  • Custom formats are allowed and encouraged. You need to provide an executable.
  • WAV, MP2, MP3, OGG music will be played on a Falcon with AniPlayer.
  • More than one entry allowed.