I spent hundreds of hours locating and indexing the original files of the most popular Halo 3 custom games (see pics). All uploaded to file share “Halo3Library” on the Master Chief Collection. :
Mega Bloks Halo 10th Anniversary GFT55 warthog run master chief | eBay
Halo 2: Anniversary Edition doesn't support native 1080p | VG247
Xbox Series S can run all the Halo: The Master Chief Collection games at 120fps – Destructoid
Looks like even your potato PC will be able to run Halo: The Master Chief Collection
Master Chief LV Print 11x14 Limited Run — Gabriel Dishaw
Will We Ever See Master Chief's Face? Not Really, Says Halo Boss
PC specs and requirements - Halo Infinite | Shacknews
How does Master Chief pee? An investigation - Polygon
Master Chief runs the Metal Gear Gauntlet - Battles - Comic Vine