What is so hard about coming up with a new game concept? Brenda Romero must come up with 10 a day and seems to have been doing it for forever. I can't be that hard can it?
Well, yes and no.
Have a look at Brenda Romero's work on analogue games. Perhaps, if you have the time, unravel some of the threads you can find about her work. Consider speculating about the Mexican Kitchen Workers game,(unreleased, probably still in development) or any of the others.
http://brenda.games/mexican-kitchen-workers
On the surface you might think these games appear simple, elegant. Dig a little, try to play one, recreate the experience or reflect on what the experience of playing might have been like if you could have played it.
Cross reference:
http://brenda.games/work-1
https://gamefulthinking.blogspot.com/2021/01/exercise-brainstorm-game-idea.html
https://gamefulthinking.blogspot.com/2021/01/paper-prototyping-exercise.html