Almost no one writes their own FPS entirely from scratch in the past decade outside of a handful truly enormous industry players, much as no one really writes t

Almost no one writes their own FPS entirely from scratch in the past decade outside of a handful truly enormous industry players, much as no one really writes the entirety of a web app themselves. You choose one of the many existing game development frameworks and rapidly prototype a concept, if it works you keep iterating on it etc etc. This works in games as well as any other major software endeavour. The matter of having the talent to produce a new idea that’s actually fun to play and marketing it successfully is arguably the hard bit here, rather than the technical implementation details. I’d make the argument today that the technical barriers to entry for game development are almost _too_ low now, which is why partly why Steam is filled with so much “indie” junk.