Spacetime Studios is still hard at work on its upcoming horror-themed Dark Legends, the third entry in the legends franchise.

That doesn't mean it's too busy to take the time to spread word of the series' current success, with the two previous titles having amassed over 100 million plays.

In fact, Spacetime tells us that players of its games spend twice as much time on mobile MMOs Pocket Legends and Star Legends: The Blackstar Chronicles than the average gamer spends spends on all mobile titles each month.

MMOre and more

According to research from Nielsen, the average iPhone gamer spends 14.7 hours playing games monthly. Android users, meanwhile, play around 9.3 hours per month.

The average Spacetime player clocks up just over 25 hours a month.

"MMO games by their nature are more engaging and involved than most genres, but making that work in the mobile world is very delicate balancing act," said Cinco Barnes, Spacetime Studios' chief vision officer and co-founder.

"With each launch of a Legends title we make it our mission to innovate and it has become the largest, most successful mobile MMO franchise in the world."