Niantic were shocked by the success of 'Pokemon GO'.

Pokemon GO

Pokemon GO

The technology giant launched the hugely profitable title in mid-2016 and John Hanke, the Chief Executive Officer of the game's developer, has admitted to being caught by surprise at the incredible popularity of 'Pokemon GO'.

Speaking to The Verge, he explained: "We lost probably six months on our schedule because of the success of the game.

"Really all the way through November and December, from launch onward we were rebuilding and rewiring infrastructure just to keep the game running at the scale that we were running at."

Naturally, the technology firm was thrilled with the success of the title. But the company also had a few issues dealing with the demand for 'Pokemon GO' shortly after its launch.

John shared: "We were fortunate to have a massive launch, a massive success, and many, many more users than we had planned for. But we had to redirect a substantial portion of the engineering team to [work on] infrastructure versus new features.

"That switched off things like extending gyms, it pushed out things we still want to have, like player-versus-player and trading. I'd say we're about six months behind where we thought we would be."