Colossal Order

Background
Colossal Order is a Finnish video game developer founded in 2009 by Mariine Hallikainen. Their games, most notably Cities: Skylines, are all published by Paradox Interactive.

(2011, 2013, 2015)
Logo: On the black background, we see a big blue square, with C and O letters, and company name, under the letters.

FX/SFX: Fading

Music/Sounds: None

Availability: Seen only on Cities in motion and it's sequel and cities skylines.