One Thumb Mobile is an independent game development studio focused exclusively on making genre defining, free-to-play massively multiplayer online games for mobile and tablets. Tech-savvy, single-minded and hugely ambitious, we pioneered the mobile MMO genre in 2011, launching our flagship game Celtic Heroes
for iOS. Since then Celtic Heroes
has been constantly expanded and improved and today it is one of the highest grossing 3D MMORPGs in the App Store, having been downloaded over 1 million times.