Pre-Xbox Halo
From Halopedia, the Halo wiki
Before X-Box, before Halo:CE there was a Halo game that was orginally announced for the Mac as aMyth-style strategy game[1]. The game eventually evolved into Halo:CE and along the way lost some vehicles and weapons and others went complete overhauls. Below are some examples of lost or heavily modified weapons:
Gattling Gun
The Gattling Gun was a weapon originally designed for the Pre-Xbox Halo Combat Evolved. It seemed to be a hand-held version of the M41 LAAG, but, as it was not put into the game, it's characteristics are unknown.
There have been several mods, using Halo Custom Edition that have integrated the Gattling Gun into the game, using the handle and base of the Flamethrower, but replacing the adhesive projector with the barrel of an M41 LAAG.
Machette
Machette vs EnergySwordA Machette was at one point part of the Halo game play
<gaLlERY> Image:Halo_072199.jpg|The Gattling Gun, in the hands of an early design for Master Chief Image:Halo chief 1099.jpg <Gallery>
But there's a lot to see here, these shots cover roughly 1998-2000 and for the careful reader, even a few untold secrets.