343 Industries

Background
343 Industries is an American video game studio located in Redmond, Washington. It was established in 2007 as a first-party developer by Microsoft Game Studios. The studio is responsible for the Halo series of military science fiction games since Halo: Combat Evolved Anniversary, after original developer Bungie announced its split from Microsoft. The studio is named after the Halo character 343 Guilty Spark.

1st Logo (November 15, 2011-2021)
Logo: On a black background, a glowing light appears over a curved surface, which glows to reveal a silver surface with tech detailing. The surface zooms out and reveals more surfaces like it, right before a large, darker-colored object passes the screen. From there, it reveals a background dimly lit, and the text "343 INDUSTRIES" in a Handel Gothic font. The letters are shown briefly turning towards the screen before they fade to a darker shade and slowly zoom out, as a light briefly shines on the logo.

Variants:
 * On Halo: Combat Evolved Anniversary, a early version has the logo fading in from darkness, slowly zooming in as a flare shine on it. The game's opening theme is heard here.
 * On the PC port as well as post-2019 update XBOX versions of Halo: The Master Chief Collection, the logo, like the Xbox Game Studios logo, is a scratchy white print logo on a military green background. A portion of Halo Reach OST "Nightfall" composed by Martin O'Donnell and Michael Salvatori, is heard during the logo combo.

Technique: CGI.

Music/Sounds: Some dark toned mechanical sounds, presumably a dark whoosh. The Blu-ray releases of Halo: Nightfall and Halo: The Fall of Reach have the logo in a low tone.

Availability: Seen on all Halo games and other projects from the time frame, like Halo 4: Forward onto Dawn.

2nd Logo (June 14, 2021-)
Logo: On a black background, a bright light shines to reveal a valley scene at sunrise zooming out, with a winding river at the bottom and clouds flanking the corners. It then starts to zoom out faster and rotate clockwise as it turns into a space setting with a horizon, and then into a cavern made of metal chunks. The camera then finishes one full rotation as it zooms out from a hole to reveal the metal chunks forming the logo from before, which then brightens up and shines, zooming out as a haze appears at the bottom and a Halo Array ring appears above the logo.

Variant: A short version starting at the logo forming is used for some trailers and the 2022 Halo TV series, which the latter has it play in warp-speed.

Technique: CGI.

Music/Sounds: A ethereal synth choir, with whooshes heard when the logo zooms. Sometimes, the opening/closing theme plays it over.

Availability: It debuted with the multiplayer overview trailer for Halo: Infinite, eventually premiering on the actual game with the Xbox Game Studios logo preceding it, and will appear on all future Halo projects.