The final game I worked on at Proper Games was Crackdown 2, specifically the DLC pack - Toybox.
The local developer Ruffian was building Crackdown 2 after the game had been taken off Real Time Worlds. The game was on a tight schedule and they needed some extra help, specifically in the DLC pack called Toybox. This provided the ability to unlock the game, and new multiplayer modes as well as additional vehicles.
Crackdown 2 was a big triple A exclusive for Microsoft, also working alongside another development studio was interesting to see how cultures differed.