career – How to move from Android development to game development?

I am a super Sr Android developer (since 2009) with a passion for video games. I graduated from CS in 2008, tried to get into the gaming industry and was unlucky. I ended up making Android and I stayed with it. Now, I would like to pursue my original passion and break into the game industry, but the problem is that I have no professional experience, and my experience in game programming is limited to a first person shooter that I wrote with 3 other guys at the university. I wrote the game engine myself and did a lot of the programming for the game. I would love some steps that I (and others) could take which are not generic advice.