Oh, I'm so very sorry! I think there was a misunderstanding. I was actually talking about the development of the game and not its public announcement!
Here is the relevant part of the Wikipedia article:
"Days before the Macworld announcement, Blam! still had no permanent title; possible names included The Santa Machine, Solipsis, The Crystal Palace, Hard Vacuum, Star Maker, and Star Shield.[38] Bungie hired a branding firm that came up with the name Covenant, but Bungie artist Paul Russell suggested alternatives, including Halo. Though some did not like the name—likening it to something religious, or a women's shampoo—designer Marcus Lehto said, "it described enough about what our intent was for this universe in a way that created this sense of mystery."[28] On July 21, 1999, during the Macworld Conference & Expo, Jobs announced that Halo would be released for MacOS and Windows simultaneously.[36]"
Halo was introduced by Steve Jobs at MacWorld. It was always called Halo.
“This is not QuickTime. Everything you’re about to see is being rendered in real time on a Macintosh using OpenGL.” [1]
Then Microsoft bought Bungie and made Halo an Xbox-exclusive launch title. [2]
> de facto anti-gaming in the late 90s going forward
Bugdom, Nanosaur, Cro-Mag Rally and Otto Matic by Pangea as well as Deimos Rising shipped as built-in platform games on various iMacs and iBooks, the G4 Cube, and the eMac. Tony Hawk’s Pro Skater 4 came with one model of eMac. Nanosaur 2 and Marble Blast were bundled with later iMacs, iBooks, eMacs and the Mac mini. Previous to that, the Power Mac 6500 shipped with MechWarrior 2 and Descent 2. [3]
[1] https://m.youtube.com/watch?v=Lxdgo1rFcxU
[2] https://en.m.wikipedia.org/wiki/Bungie#:~:text=Microsoft%20a....
[3] https://apple.stackexchange.com/questions/405405/what-third-...