I haven't played this, but as a sucker for FMV I know I will.  This game was commissioned as a tourism promotion piece for Warsaw, Poland, much as Yoomurjak's Ring was a promotion for the town of Eger, Hungary.  Yoomurjak was a large, wonderful game, so I know that "promotional" needn't be bad, and can be very good.

I've read that the game can have long load times, so be prepared.  The game is complete in 3 parts, all now available.

"Warsaw's Mission: Bielany" is a free browser-based
internet adventure game. You play as an Agent of Mayor's Office
Protection Squad (MOPS). During your missions you explore many different
locations of the Bielany District, while investigating a dangerous and
elusive criminal, The Dark Character. The game was created by Nitreal, a Warsaw-based software
development company thanks to the initiative and support of Bielany District Office and
Society of
Friends of Warsaw. The game requires Flash Player version 10 or
newer.

http://www.missionbielany.com/