Has anyone managed make this work on steam deck?
I can launch the game, music works, mouse moves but it does not register any clicks so it's stuck on menu screen.

According to this threads the game runs perfectly on wine:
https://www.gog.com/forum/wizards_and_warriors/how_to_really_perfectly_fix_the_mouse_movement_problems
https://www.gog.com/forum/wizards_and_warriors/gog_put_really_low_effort_on_this_one

Is there a way to tab out and back in...or re-maximize/force lock into the game window (a la alt+enter)...with it? I am unfamiliar with steam deck, but the problem sounds familiar. Also watch any software which could interfere, I have had issues with some games with a few odd things such as a specific headset and a mouse software. Or something popping up in the background. Or a game starting before discord launches. Sorry if these aren't helpful to this particular issue, just throwing possibilities.