Buenzli was a demoscene party 

Size (limitations)
Colors (Farbverläufe vgl.  limitations)
Texts with Effects (Sin, Cosinus etc) > Grafity
Effects 
Sprites
Rotating Objects (Like cube)
Parallax layers … 
Writing into the boarders
Music

Missing often: Creativity, technical driven 

What type of ‘art’-concept is used in the demoscene?

It is the cathode ray. 
and it never goes up - only in the demos.

it is a technical visual thing about power and control! 

tribute to?
exploting? 
> tribute - take the best … collage