38 Pictures is providing the film footage for Areo, the company which makes the computer game.
Footage was dispersed between game play to enable players to learn more about the investigation, executive producer Zoe Hobson said.
The crew of up to 25 people would be filming for eight days to create 45 minutes of footage for Episode 4: In Absentia.
Locations have included Lower Stuart St, a North Dunedin house and Blackhead Quarry, where a car was blown up, much to the delight of the crew, who had spent a day filming in the rain.
"We are really trying to support the Dunedin film industry. We are pretty lucky to live in a place where we have so much support from the community." Mrs Hobson said.