Monument Valley, an Apple Design Award-winning game that twists player perspective like an MC Escher painting twists stairs, has surpassed more than one million sales. We're not sure what that number means to a game that cares nothing for the laws of physics, but developer ustwo seems pleased enough to start planning for post-release content.

Producer Dan Gray told TechCrunch that the team plans to double the average gameplay time of 90 minutes with additional "lost scenes" for the game. Gray wasn't sure if these scenes would be sold or free to download, but either way they'll take place outside of the main story. Ustwo is aiming to release the extra levels sometime in the fall.

If you're not sure what all the fuss is about, Monument Valley - along with its fellow Design Award winners - is on sale in the iTunes store.
[Image: ustwo]

This article was originally published on Joystiq.

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