Marker Metro chief executive Keith Patton, who is also a Microsoft regional director, said the acquisition meant the company would be able to now expand into other countries.
"It will allow us to do business with our other partners and grow our presence in other countries like the US and UK," Patton said.
Marker Metro was founded in 2011 by Patton and director Jon Beattie, it employs 20 full-time staff and has a contractor pool across the UK, United States and Sweden.
Developers typically work to create a game from scratch to later sell on, whereas Grey Lynn-based Marker Metro works on co-developing games for clients.
Some of Metro Marker's big-name clients include Disney, Sony Pictures Television, Zynga, NZTE, Carters Holt Harvey and Plunket.
Marker Metro has also worked on many Disney games and titles including Disney Life and Disney LOL apps.
In New Zealand 24 per cent of game developers work primarily on contract work, with 68 per cent focused solely on creating new products.
Patton said the company's long-term plan was to expand in to Los Angeles and UK.
In 2015 Marker Metro posted an annual turnover of $4.1m.
The Marketing Group executive chairman Jeremy Harbour said the company's acquisition marked a major step forward.
"I am delighted to welcome the new members to the group," he said. "It represents a major step forward in both size and geography, and also to have been able to complete our second major acquisition before our two-month mark is testament to the value of the model."
The Marketing Group recently acquired Rainmakers, another Auckland-based digital agency, bringing its total global network to 10 firms. The acquisitions are part of a strategic portfolio approach of developing its networks in fast-growth markets and across key sectors.