Kowloon Walled City in video games
Once the most crowded place on Earth, it was knocked down in 1994, but Shenmue II and Black Ops kept it standing. Kowloon Walled City appears in 2 games on Pixel Pilgrimage: Shenmue II and Call of Duty: Black Ops (as Numbers (Kowloon)).
In real lifeThe games
In gameShenmue II2001KowloonReal place, reimaginedA lawless tower city ruled by the Yellow Heads gang, where Ryo fights his way to the top of the Yellow Head Building.Game vs real photo 
In gameCall of Duty: Black Ops2010Numbers (Kowloon)Inspired by a real placeMason and Woods interrogate Dr Daniel Clarke in Kowloon and escape across a maze of crowded rooftops and tight alleys.Game vs real photo
The real place
The Shenmue wiki says the game's Kowloon is based on the Kowloon Walled City, a densely packed enclave that was home to tens of thousands of people until it was demolished in 1993 and 1994. The game takes liberties, such as placing it on a hill. The photo shows the real Walled City from the air in 1989.
Visiting
Kowloon Walled City Park now covers the site, with the restored yamen building, remains of the old South Gate and a bronze model of the city. Sung Wong Toi MTR station is about a 10-minute walk away.
More landmarks in Hong Kong
Hong Kong in video games · All landmarks · Shenmue II · Call of Duty: Black Ops