Chameleon is a PC exclusive 2005 FPS/TPS stealth action game created by Silver Wish Games, the Slovak division of Illusion Softworks (aka 2K Czech, makers of Mafia, Hidden & Dangerous and Vietcong series). It uses the same engine and had the same development director as Mafia 1. Despite being dubbed in English by professional actors, the game never secured a release outside Eastern Europe.
en.wikipedia.org
Chameleon PC (2005) review - The best stealth game you've never played!
youtube.com
Levels include Albania, Moldavia, Argentinian submarine, Baltimore, Lebanon. Plenty of cool little features, like being able to holster weapons, and if caught without a gun by the enemy they will try to arrest you instead of blindly opening fire.
The game is effectively abandonware, and surprisingly difficult to download and install without bricking your computer. So here is a nice package that includes the game in English, Spanish, and (partially) in Czech, with Starforce removed, plus DSOAL to restore the EAX audio effects on modern Windows. The game's configuration utility has also been transalated nto English, which I don't believe anyone has done before. Link compiled by a Yas Forumsirgin.