Ask HN: How long is the road from web dev to game dev

I've been creating web stuff for almost 10 years now but these days I fell really drained of doing the same stuff all over again on almost every projects. So I started looking around for alternatives and since I've always dreamed of creating video games (but somehow always assumed that it was out of reach to make a living out of it), I am considering diving into this.

I am a fairly experienced programmer and I have some experience in 3D modeling / rendering as hobby but I am a complete ignorant in game design / programming. Is it realistic to think about a career change at this point ? If it is, any tips ? Can I be hireable in gaming industry in a decent amount of time?