The more fantastical elements of lucid dreams are as clearly unreal as playing a videogame. You know you’re dreaming and can control it.
My problem has been more that I can’t remember if something mundane happened in a dream or reality. I’ve had and remembered entire conversations which turned out to be dreams when I referenced them to the person in question.
A lot of my dreams - lucid or not - are just me doing my daily stuff, fully in control of my actions but not the scenario I am in.
Problem solving in dreams can be hyper efficient. I once designed an entire web application in the short dreamstate between waking up to my alarm and the second ‘snooze’ alarm. Drew up the solution immediately and then went to work and built it over the course of a month. Mastering that would be so powerful for knowledge workers and artists alike.
I’ve tried the same with music but, while I can create music in my dreams I cannot yet recreate it awake.