is this manga from 20 years ago? The video game market is huge, it's taking over talent from the movie industry, wdym unstable work?
And yeah, the idea that enjoying games leads to making games is weird (I do enjoy both) - now if you're crazy for games, you might do well as a beta tester, professional gamer or even let's play maker. After that you might consider game creation related work - it's not limited to programming, you can also be a designer, an artist, a voice actor, special effects pro; the industry really is huge.