Allegiance is a cancelled FPS / action game that was in development by Team17 in 1995 / 1996, rumored to be planned for the Playstation, Saturn and 3DO. According to Spong, it seems that the game was to feature a female lead character, Kay Brogan. Despite several level meshes being completed the game was canned due to the failure of the 3D engine to be developed in time.
In the aftermath of Tomb Raider some Team 17 staff tried to convert Allegiance into a Tomb Raider style game, but as the team had a reputation of original games, they decided not to follow this derivative route.
Thanks to Dream17 we can read a comment about Allegiance that Martyn Brown (Team17 co-founder) posted on his blog on March 30th, 2007.
A spy thriller that got not much further than some crackers budget FMV when again the company was knee deep in Worms focus elsewhere. I shudder to think how it all happened, really. The idea was sound, it just suffered from a total disregard of planning, design and implementation.
Celine was able to find a screenshot of this game in Cd Consoles magazine issue #7, and another scan is from Play Magazine issue #2. Thanks to Unclejun for the help with the video! Thanks to Andrew for the other scans Play Issue #1 (UK magazine)!