Revolution has released the iOS version of Episode 2 of Broken Sword 5 - The Serpent's Curse.
The concluding part of the adventure game is a £3.99 in-app purchase within Episode 1, which itself costs £2.99.
It requires iOS 7.0 and is compatible with iPhone, iPad and iPod touch, but is optimised for iPhone 5.
"We are very proud of the way that the game plays on iOS," said Revolution chief Charles Cecil.
"On its release, the game reached #1 in many countries including the UK, France and Germany and exceptional customer ratings indicate the popularity of the games amongst adventure fans. Episode Two ramps up the level of drama, as the adventure bursts out from Paris and London, taking the player on to stunning locations throughout Spanish Catalonia and to deepest Iraq, the birthplace of civilisation."
Episode 2 for Android will be released shortly, Revolution said. The full game is already out on PC, Mac, Linux and PlayStation Vita.