Hello, I'm Mathieu M. alias "Alkama".
I'm french, I'm a musician, a coder, and a member of the demoscene since the early 90s.
In my free time, you'll find me producing electronic music or coding realtime 3D computer-graphics.
I'm member of the TPOLM, Calodox and Spectrals demo groups.
The demoscene is about producing programs that run in real time and produce audio and visuals with no interactions. It should run on a freshly installed machine, with no network, and without playing pre-rendered video files. It is not forbidden to use existing 3D engines like UE or Unity, but a lot of demomakers prefer to tailor their own engine.
It's a bit like a video game where you dont have any control.
Demomakers (we also say demosceners) assemble in parties across the globe, called Demoparty, where we compete in different compos (competitions segmented in categories where the audiance votes for their favorites). That's the places we attend to release a new production. There are many categories for individual works like photos, graphics, streaming music, tracker music, animations and videos, ... or for binary files categorised by size limits and platform, like PC Demos, PC 4k Intros, Oldschool Demos (for platforms like Amiga, Atari, ...)
Some categories include size limitations where your whole production (executable file) must not be larger than a given number. For example 64kilobytes, 4kilobytes, 256 bytes...
Most of the fun comes from pushing the limits while producing nice looking and sounding content. There's no money to gain, just the respect and enjoyment of fellow demosceners and the pleasure of teaming-up with friends to make a creative project. Demos are also a rare case of instant gratification, it's immediate eye sugar! And not many things beat the excitement and gratification of seeing your production play on the big screen and loud soundsystem of a Demoparty, with the audiance reacting to it.
The process of crafting a production from the ground up also means learning and sharing a lot of nice tricks.
To learn more about the demoscene, please refer to the wikipedia article .