Xbox was apparently working on a rival to Uncharted that would've been heavily inspired by Mission: Impossible.

Xbox's big Mission Impossible meets Uncharted game never released, but it got further along than you might think.

Although the game sounds like a fun concept, the report indicates that it was "never on sure footing." The project was ...

It was supposed to be a challenger to Naughty Dog's beloved series by The Coalition, but was eventually cancelled.