Nice one button game. Simple but effective. I like the theme interpretation.
Feel free to check out my sources on how to setup a letterbox fitted camera to get a resolution independant game. (See ui_cam and game_recalc_ui_camera in game.odin)
I also recommend to multiply your movement with raylibs GetFrameTime() to be frame rate independant. (See game_simulate with dt variable in my sources if you are interested)
Happy new year.