Sommarhack 2021 – A trio of new releases from Effect representing!!!

A trio of fun and exciting demo and intro releases from Effect representing online at Sommarhack 2021.

Flexiscroll 2021

We were inspired to make a bold, brash prod that brings out those feelings of excitement that we all had watching the old demos and cracktro as kids back in the late 1980s and early 1990s.  We wanted to make a demo that gets in your face and leaves you out of breath!

The Flexiscroll from the Decade Demo by the Inner Circle was always one of our favourites back in the day, so we decided to have a go at doing our own version, with a brand new method.  Whilst the amazing 1991 original by Griff states that it draws around 3000 pixels per frame, ours hits as high as 8000 (or even higher) pixels per frame on some of the waveforms!  And it really is as it looks – this scroll truly can take any form, and each waveform is created in the short interval between the last wave fading out and the new wave fading in.

This demo took a very, VERY long time to complete.  Some of the code is more than two years old, and we spent literally hundreds of hours trying to get the flow and presentation to the level we wanted it.  There are lots of little details nestled in there, and some new techniques (we think…) on display too.  Watch it a few times and see what you can notice 🙂

This 64kb demo runs on STF/STEs with at least 1Mb of RAM.

Bread and Circuses:

The scrolltext on this one speaks for itself 😉.  In terms of the main effect, this uses our new chunky display routines – which are super super fast!  We haven’t even scratched the surface of what we can potentially use these routines for – so watch this space…

This crowd pleaser entry which also runs on STF/STEs with half a meg or more of memory.

Fruit is Great!:

The motivation for this 256 came solely through frantic ongoing competition between Tom/EFT and spkr/SMFX.  We heard on the grapevine that he had pulled off a plasma in 256 bytes, so we realised right away needed to up our game to try to match him.  Whether in the end we did or didn’t is your call – but we would like to point out that of our 256 bytes, 128 are taken up with bitmap data (ripped from Bubble Bobble!!), and a further 16 are occupied with palette data.   If you do your sums, you’ll therefore realise that we fit all of our code for this intro into just 112 measly bytes!!  We think this achievement deserves an award of its own!

This 256 byte intro runs on STF/STE with half a meg or more of memory.

To read more, and download the releases, head over to the Releases section.

ymphibian music demo

Effect is very proud to present ymphibian.  A chiptune album demo from Tom Kito and Proto of Effect.

This music demo features 12 top class SID and digital music tracks by Proto of Effect.  The tracks included on this demo are as follows:-

  1. Basics
  2. Mortal Kombat (STE)
  3. Mantrax
  4. Dream
  5. CobraCOM (STE)
  6. Camel Trot (STE)
  7. dymb
  8. Metabuzz
  9. Battle Royale (STE)
  10. Buzz
  11. The Joker (STE)
  12. Doom

Once started, this music demo will auto play all tracks on this superb album.  So, sit back, grab a beer and enjoy the banging beats coming from your Atari ST’s YM2149!

ymphibian music demo (TOS file, 1mb+, fully compatible with STeem) (515 downloads)

Outline Online 2020 – Being John Malkovich II: Being Gary Kasparov

Effect’s second release during lockdown entered into the Outline Online 2020 256b intro competition was, “Being John Malkovich II: Being Gary Kasparov” coded by Kito of Effect.

An awesome self-generating compact code lesson which surely has AI built into it, or at least a neural network of some kind!  Genius!

Please head on over to the releases section to download this awesome intro!

Outline Online 2020 – Holland on ROXR

During the coronavirus lockdown of 2020, Effect distracted themselves by getting into the spirit of the Atari ST with Tronic learning some coding techniques and Kito working his usual amazing magic!

The first release for Outline Online 2020 was for the 256b intro competition titled, “Holland on ROXR” coded by Tronic of Effect.  A very simple demo demonstrating the ROXR technique.

Please head on over to the releases section to download this awesome intro!

Codef remake of Kuba Club Culture Mix Pack #6

Back in 1994, Tronic of Effect and Mikee of The MLP joined forces with Mikee’s talent for music and graphics, and Tronic’s (questionabl)e talent for coding to produce a virtual music label titled Kuba.  We have released six packs between 1994 and 2019 and had some great fun along the way, from our bedrooms in Caterham to Somerset, England!

More information here on Demozoo with downloads for each pack release.

During the recent Coronavirus pandemic, I (Tronic) decided to learn some new programming languages while locked away in my home under lockdown rules.  Notably, getting back into HTML5 and Javascript, the Codef demo platform and, with some help from some great guys, 68000 assembler programming (watch this space).

My first Codef release was completed recently and is now available to watch.  It is a remake of the latest Kuba Club Culture Mix Pack #6, initially released at Silly Venture in 2019.

You can view the release here on

Enjoy and stay safe everyone!