Ustwo Games has just picked up an Apple Design Award for its beautiful, delightful iPhone/iPad game Monument Valley. We visited their offices on the day of its release in April to record an interview with executive producer Dan Gray, designer and artist Ken Wong, director of games Neil McFarland and technical director Peter Pashley.

Monument Valley is an elegant puzzle game where you guide a young princess, Ida, through a maze of ruined monuments. You manipulate the landscape to let Ida get from place to place, using optical illusions to your advantage – as in Monument Valley, when walkways appear to line up, Ida can walk along them – even when you know that they really don/t.

In these films they explain how the works of MC Escher and the architecture of ancient temples inspired both Ken's visuals and way the game is played.

The team also detail how they designed a game that's not aimed just at 'game players' and how they refined its design through extensive testing with real users.

The team also revealed their favourite things about the game and its creation in the video below.

Monument Valley is available from the Apple App Store or the Google Play Store for £2.99. An Android version will follow.

Interviewer // Neil Bennett
Video producer // Dominik Tomaszewski
Editor // Neil Bennett
Assistant // Grace Rasmus