Guerrilla Games

Background
Guerrilla Games is a Dutch video game development studio based in Amsterdam. The studio was originally founded as Lost Boys Games in 2000 by Hermen Hulst and Arjan Brussee, before being re-established as Guerrilla in 2003. The studio is best known for the Killzone and Horizon series for PlayStation consoles. Guerrilla would be purchased by Sony Computer Entertainment in 2005, and is currently part of the PlayStation Studios group.

(March 28-October 18, 2002)
Logo: On a black background, we see a, roadsign-like diamond with a white drawing of a cactus inside and a piece of the ground below it. The diamond has a black border with white outline. Below is a black rounded rectangle with the white text "FORMULA" inside.

Variants:
 * On Rhino Rumble, the logo is on a white background, with "LOST BOYS GAMES" below the "FORMULA" text.
 * On Invader, the logo flips in, and flickers around as if it was on old, deteriorated film, complete with film scratches.
 * On Black Belt Challenge, the text "Licensed by Nintendo" is seen below in a medieval-esque font.

Technique: None, aside from the animation on Invader.

Music/Sounds: None.

Availability: Uncommon. Seen on Rhino Rumble for Game Boy Color, as well as Invader and Black Belt Challenge on Game Boy Advance.

1st Logo (September 3-November 2, 2004)
Logo: We see a cubic, stylized "G" symbol, beside the name "GUERRILLA" in modified Authority Regular. "DEVELOPED BY" is seen above, with the byline "GUERRILLA IS A MEDIA REPUBLIC COMPANY" below it all.

Variants:
 * On ShellShock: Nam '67, the logo is.
 * On Killzone, the logo is with white lines of light scanning over it.

Technique: None, aside from the animation on Killzone.

Music/Sounds: On ShellShock: Nam '67, a menacing wind sting. On Killzone, none.

Availability: Uncommon. Seen on ShellShock: Nam '67 for PS2, Xbox and PC, and Killzone for PS2.

2nd Logo (October 31, 2006-)
Logo: Same as the previous logo, except this time including only the "G" symbol.

Variants:
 * Killzone: Liberation: "Developed by Guerrilla" is seen below the symbol.
 * Killzone 2: We move through a spinning matrix of futuristic, - bars which stop in the middle of the screen to form the G in dark gray, which then is covered by splatters of paint. The logo dissipates back into pieces while zooming toward us.
 * Killzone 3: The Sony Computer Entertainment notice flickers to a CRT and becomes a range of indecipherable symbols (assumedly the language of the Helghast, the rival empire from the Killzone series). Several bars of text are seen passing by before a log-in screen pops up, with the logo of the Helghan empire notably visible at the top. A password is entered, and the animation from the Killzone 2 variant plays (this time tinted, and with several visual glitches).
 * Horizon: Zero Dawn: The text "GUERRILLA" is seen below the G, in addition to a trademark symbol (™) next to it.

Technique: None, or CGI.

Music/Sounds: None or the opening theme of the game. Music/Sounds Variants:
 * Killzone 2: A soft choir, alongside dialogue by the Helghast leader Emperor Visari, continuing into the game's intro cutscene ("My people, sons and daughters of Helghan, this much I vow...")
 * Killzone 3: A somber, depressing orchestral score.

Availability: Common. Seen on Guerrilla games since Killzone: Liberation on PSP.