This is an interesting viewpoint. I might suggest prototyping game ideas with an existing "game creation" tool, even something like roblox. Then one has multipl

This is an interesting viewpoint. I might suggest prototyping game ideas with an existing "game creation" tool, even something like roblox. Then one has multiple pathways for their design to progress - world design, interaction, story, events, as well as engine. And one can much more easily test out different aspects of graphics and physics to see which their game engine needs or demands. There is also the ability to code engine algorithms directly and tweak so many variables in the prototyping stage, that the resulting parameters/functionality can be brought back into the actual custom game codebase.