Eerie animated movie

I’m trying to find the name of an animated movie I’ve watched over 10 years ago;
It was 2d animation, propably european with very geometrical, cubistic, purpule skin characters.
I believe that the main plot was about them waging a war on each other.
The movie was flat and the design of characters and scenery was, as I’ve said, wery geometrical, yet, the colors were very rich.
I’m really looking for your help :slight_smile:

Fantastic Planet? Fantastic Planet (1973) trailer - YouTube

Unfortunatly no, but it had a simmilar mood.