„I’m not a perfectionist,“ says the guy who makes niche puzzle games that turn me into a gibbering wreck obsessed with efficiency. And I feel a wave of comical fury. If like me you’ve been whirring and clicking your way through very good engineering puzzle game Kaizen: A Factory Story, you’re probably a fan of previous work from the same developers. The creators of Opus Magnum and Infinifactory may have dissolved their old studio Zachtronics and chemically regenerated as Coincidence Games, but there are still large traces of a Zach present. I caught up with designer Zach Barth to ask about perfectionism, the Factorio-like automation game he gave up on out of boredom, and how the team managed to make a story about factories in 1980s Japan feel human.