Being a former level-designer for games definetely helped me a great to deal with everything UX related. It’s kinda the same discipline. Additionally you learn to deal with a lot of abstract and complex concepts like physics and their impact on the actual gameplay.
One of my core learnings was developing a sense for coherence — when all planets of game development align: physics, level- & sound-design as well as music. That’s when fun and deep purpose emerges. And I’ve got this feeling that the web isn’t there yet. Immersion needs all of them.