Thanks everyone for looking and commenting. It's true this has some strong influence from computer games. I must confess I have been into videogames since I was a kid, and I still think their strong visuals are very interesting, and when they are well done, they can be inspiring, inmersive and beautiful. Some of my palettes choices are strongly influenced by the work of Lucasarts and their classic adventure games in the 90s (Monkey Island saga and more).
There is sources of inspiration everywhere. It's just a matter of finding the one that works for you!