Something like this?:



You could make it with sprites or thin models and place them very close the camera and with a shader that shows them ontop of other stuff (or use ZNEAR flag but that one has some visual bugs iirc). Input could be done though draw_text but would appear weird because you cannot rotate it (I guess). If your feeling hardcore you could use draw_line3d to manually create letters. Maybe try draw_obj to show text? Or maybe convert/render the input text to bmap and show that on a sprite or such?