Being able to edit object properties while the game is running in Godot (and probably Unity I'm guessing) is killer for debugging.
I was having a problem in which the game cleared the level, set up the new level, and moved the guys to it, but it looked like it just blanked everything out. Being able to find the camera object, then change its properties helped me literally zoom out and spot that the new stuff was being generated really far away from the old stuff, both the tilemap and the sprites.
(Why that's happening, though, I don't know.)