one thumb mobile

dedicated independent MMO studio

One Thumb Mobile, an independent game development studio, is focused exclusively on making genre defining, free-to-play massively multiplayer online games (MMO) for mobile devices and tablets. Tech-savvy, like-minded and hugely ambitious, we form a melting pot of talent who pioneered the mobile MMO genre in 2011, launching our flagship game Celtic Heroes on iOS.  Since then, Celtic Heroes has been continuously expanded and improved upon. Today, it is one of the highest grossing 3D MMORPGs in the iOS App Store and has been downloaded over 1 million times.

This is just the start of our ambition and plans for Celtic Heroes and MMO gaming on mobile. Successful and fully independent from both publishers and financiers, our freedom allows us to focus all our relentless energy and care on crafting games of the highest quality with exciting and atmospheric content. We are continuing to expand, with ambitious growth and development plans. If, like us, you are passionate about the future of MMO gaming on mobile and want the chance to leave your mark, visit the jobs page to find out more.


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