Halo: Combat Evolved
Halo: Combat Evolved
Halo - Did You Know Gaming? Feat. Rated S Games
In 2022, an Easter egg was discovered on the title screen of the Beta 1749 build of the game dating back to August 15, 2001. A hidden legible message can appear among the 8-bit text reading:

"this is whack
if you can

this you are to damn close"

This presumably refers to staring directly in front of the screen to read the tiny message.
Contributed by MehDeletingLater
For the premiere demo of Halo: Combat Evolved at MacWorld 1999, Marty O'Donnell and Michael Salvatori were tasked to create music for the demo within three days. They were directed to make the song that would become the Halo series' main theme sound "ancient, mysterious and epic". While driving to Salvatori's home, O'Donnell brainstormed the song and its core melody:

"[A]s I was driving, I thought 'Okay, ancient...you know, monks are ancient, so I'm going to start with some sort of monk chant, and it's got to be hook-y, it's got to stick in people's heads and then we'll go on to something sort of epic and pounding; cellos and drums, and stuff.'

I've always analyzed [the melody to "Yesterday" by The Beatles]; it's got one high point, it's got one low point, it's got four sort of irregular phrases...

So, [the Halo theme is]...not a copy of the Yesterday melody, but the Yesterday melody inspired me to put that together, because I thought, 'Well, if I have one high point, one low point, to four irregular phrases but still do a legitimate monk chant melody...it may be able to have legs.'"

The song was recorded the day prior to MacWorld 1999 by three jingle singers, O'Donnell and Salvatori, accompanied by a string sextet of four violins and two cellos. O'Donnell requested one of the jingle singers to perform the Qawwali-like voice solo during the string melody, but upon hearing O'Donnell's example, it was decided O'Donnell would sing the solo instead.
Contributed by MehDeletingLater
In the level "Assault on the Control Room", by flying a Banshee onto the 2nd platform above the control room and then standing at the edge on the right, the song "Siege of Madrigal" from an earlier ##Bungie## game, "Myth: the Fallen Lords", can be heard.
Contributed by CuriousUserX90
The Elite's phrase "Wort! Wort! Wort!" is actually Johnson saying "Go! Go! Go!" in reverse.
Contributed by CuriousUserX90
When Halo was changed to a first-person shooter, Microsoft suggested adding "Combat Evolved" to the title to make it more descriptive, like the military games they were competing with.

The compromise was they could add a subtitle. Everyone at Bungie hated it. But it turned out to be a very sticky label and has now entered the gaming lexicon to the point where articles that have nothing to do with Halo get titles like 'Skateboarding Evolved'. So I guess in hindsight it was a good compromise. -- Jaime Griesemer
Contributed by TheW2A_GV
After beating the game on the Legendary difficulty, a special cutscene plays. Spoiler:Sergeant Johnson is seen grappling for an assault rifle with a Covenant Elite. When the Pillar of Autumn's self-destruct sequence is activated, Johnson says to the Elite "This is it baby. Hold me." The two then hug while the Halo ring explodes.

An updated version of the cutscene is also present in Halo: Combat Evolved Anniversary.
Contributed by KidDivinegon
Halo was originally planned as a Mac exclusive, and was also an RTS similar to Myth, a previous game by Bungie, and later unveiled at Macworld as a third-person shooter. This was until Microsoft bought Bungie in 2000. The game was also considered for release prior on the PlayStation 2 until the partnership with Take 2 ended.
Contributed by Makarov
There is a mistake on the 12th page of the game's manual. The blueprints for the Plasma Rifle have the blueprints for the Needler placed behind them.
Contributed by retrolinkx
Halo: Combat Evolved was originally going to be a Real Time Strategy game, and then a Third person shooter before eventually becoming a First Person Shooter.
During Halo's first European press tour, the demo computer blew up (there was literally smoke). Joe staten, lead writer and cinematics director, remembers it well:
"Having no computer made our first demo go, er, poorly. 'Imagine if you will, there's this green guy called Master Chief, and he's fighting against some purple space aliens called the Covenant.' Cool, huh?"
Contributed by DidYouKnowGaming