

Chargers have been converted to 3D and have special animations during use. The PlayStation 2 port took advantage of a "Level of Detail" system, allowing these very detailed models up close without sacrificing performance.

As such, they're considered a continuation of the High Definition Pack. This included full facial animation and individually-animated fingers. The PlayStation 2 remake of Half-Life saw even further improved models to the game, also created by Gearbox. Earlier preview shots of the Dreamcast version shows yet even older incarnations of some of the high definition models. The leaked version of the DC game included models that possessed some very noticeable differences from the finished high definition models and even had some improved models not made part of the High Definition Pack at all. However, they were evidently not directly converted as the models that appeared in the Dreamcast port appear to be earlier versions of what would finally comprise the High Definition Pack.

The Dreamcast port boasted improved graphical content, and these models were eventually carried over to the PC after the game's cancellation. The High Definition Pack spawned from the canceled Sega Dreamcast version of Half-Life, in which Blue Shift was included as a bonus addition to the game. The Barney models, original (left) and HD (right) comparison. To reflect some of the weapon changes with the high definition models, new sounds were given to the shotgun and assault rifle, as well as new sprites for the game's HUD. The Glock 17 was replaced by a Beretta 92FS, the Colt Python by a Colt Anaconda, and the MP5 submachine gun by a Colt Model 727 assault rifle. This included some notable changes to the game's original arsenal. In addition, all of the weapon models were upgraded as well.

The upgraded character models in the High Definition Pack included the scientists, security guards, and HECU soldiers, as well as several of the Xen creatures. Subsequently, while the models are improved in terms of the level of detail, it remains a matter of opinion as to whether they look better. However, despite the increased level of detail, the style of some of the models, most noticeably the HECU soldiers, has been changed. The improvements coming from the High Definition Pack mainly stem from the increased polygon count over the default Half-Life models.
