I worked at a computer graphics software company (Nichimen Graphics, now long gone) and when my coworkers ended up in game studios they got me onto their projects.
And I got into computer graphics because I programmed on Lisp workstations in my college AI lab, and years later the computer graphics division of that Lisp workstation company spun off to become Nichimen Graphics and was looking for Lisp programmers like me! So it was pretty unpredictable.