[matejn]

I've seen quite a few in Ljubljana. I drive by one in particular almost every day, and it really fits the environment and the style of the building:

https://space-invaders.com/media/invaders/ljubljana/LJU_28-d...

I really appreciate that they're locally themed. Many of them feature Ljubljana's iconic dragons.

I always figured it was some local artist placing them, never figured it was an international thing.