SWAT: Urban Justice is a cancelled strategy FPS that would have been the 4th title in the SWAT series of real-time tactical games. Urban Justice was in development by Sierra in 2001 / 2002, but something went wrong, the game was postponed and soon vanished without an explanation. In 2004 Vivendi Universal / Sierra announced a new SWAT project, the official SWAT 4 developed by Irrational Games and published in 2005. As we can read on Gamespot:
According to a carefully parsed statement from a VU spokesperson, work on Urban Justice has been “discontinued” in favor of SWAT 4’s development. However, the same spokesman stressed that SWAT 4 is both a different game and a true sequel, so it will retain the series’ gameplay elements, albeit in a refined form.
In the released SWAT 4, they did leave an ester egg that refers to the unreleased Urban Justice (Info from IMDB):
In the mission “Victory Imports Auto Garage”, there is an arcade game in the waiting room called “SWAT: Urban Justice”. This is a company in-joke; Urban Justice was supposed to be Sierra/Vivendi’s follow up to SWAT 3: Close Quarter Battle (1999), and they began advertising the game as “Coming Soon” in 2002 with a view to releasing later in the year. However, after a spending long time (to the order of years) in development purgatory, Urban Justice was cancelled by Vivendi
Thanks to discworld for the contribution!