In the smart, involving documentary "Indie Game: the Movie," when video game designer Phil Fish chillingly asserts that he'd kill himself if he didn't finish his long-gestating game "Fez," you get the feeling he isn't bluffing. That's the level of depth and candor filmmakers Lisanne Pajot and James Swirsky mine here as they profile several independent artists struggling to succeed in the highly corporatized — and often hugely lucrative — video game industry.