They Hunger is a survival-horror modification for the first-person shooter game Half-Life developed by Black Widow Games, consisting of three episodes and initially released in 1999, with the second and third entries being released in 2000 and 2001 respectively. It was one of the first fan-made Half-Life mods ever made, being distributed by the PC Gamer magazine and also ported to the Sega Dreamcast, being a well-known and well-regarded mod within the Half-Life mod community to this day.
The plot revolves around an unnamed writer in 1950's America traveling to the countryside in order to take a vacation and seek inspiration for his next work. After crashing his car due to a mysterious thunderstorm, he gets stranded in a small town overran with zombies, having to survive and find a way to escape.
The following weapons appear in the video game They Hunger:
Beretta 92FS Inox
The Beretta 92FS Inox appears as the game's 9mm pistol; it should be noted that it is merely a 92FS Inox texture on Half-Life's Glock 17 model, sharing its shape, capacity and other stats. (interestingly enough, the Beretta 92FS would appear in Half-Life through the HD texture pack released in 2005). The player can attach a suppressor on the gun to increase accuracy or detach it to increase rate of fire.
Like a lot of the weapons featured in the game, it is anachronistic for its 1950's setting since the Beretta 92 wouldn't be available until the 1970's, and the Inox version until the 1990's.
Taurus Millennium Pro PT145
The Taurus Millennium Pro PT145 with a blue frame appears in the game, referred in the files simply as the "Taurus". It correctly holds 10 rounds of its own ammo and is more powerful than the 9mm pistol (on par with the PT145's .45 ACP chambering). The Taurus is only seen in Episode three, and is used rather briefly before the player gets stripped of their weapons, never seen again afterwards.
Highly anachronistic, even for the game's own release date since the Taurus PT145 was only introduced in 2005. It is likely that it was retroactively added through a patch.
The Colt Python is another weapon brought from Half-Life, appearing completely unchanged. The corrupt Sheriff Chester Rockwood, one of the game's antagonists, has one but is never seen unholstering it.
Kimel AP-9/Intratec TEC-9 Hybrid
A Kimel AP-9/Intratec TEC-9 hybrid appears as a submachine gun, having an incorrect 40 round capacity and firing fully automatic with the primary fire and in three round bursts with the secondary fire. It does more damage than the game's G3, but has heavy recoil when firing full auto and is quite inaccurate. It also uses its own ammo. According to the mod's developers, the model was made exclusively for They Hunger by Minh Le (a.k.a. Gooseman), one of Counter-Strike's original developers.
Anachronistic since both the AP-9 and TEC-9 were only introduced in the 1980's.
Heckler & Koch G3
The Heckler & Koch G3 appears replacing Half-Life's Heckler & Koch MP5, sharing the same 9mm ammo as the pistol and being a common sight. A quite inappropriate choice, as the gun has features of a submachine gun despite actually being a high-caliber battle rifle. The game's model appears undersized, resembling a HK51, which is a compact version of the G3. Like in Half-Life, the G3 can fire grenades with the secondary fire.
Heckler & Koch G36
The Heckler & Koch G36 appears as a powerful sniper rifle, holding 5 rounds and firing fully automatic when unscoped and semiautomatic when scoped. The model in Episodes 1 and 2 is taken directly from Team Fortress Classic, while the model seen in Episode 3 is a proper and more high-quality one.
Anachronistic since the G36 was only introduced in the 1990's.
A nondescript pump-action shotgun is a common weapon in the game. The world model is crude (though the diamond pattern in the pump is similar to one found in a Winchester Model 1912), and the view model is a reskinned SPAS-12, again from Half-Life. Like Half-Life, the shotgun is also being capable of firing two shots at once with the secondary fire.
A Handheld Minigun, another weapon taken from Team Fortress Classic, appears in the game as a powerful automatic weapon with fast rate of fire. It uses the same ammo as the 92FS Inox and the G3, and is only found in Episode 3.
Technically not anachronistic since rotary cannons like the M61 Vulcan have existed prior to the 1950's (though it isn't exactly a minigun), but the concept of a handheld rotary cannon wouldn't exist (or, at least, wouldn't become popular) until the late 1980's and early 1990's, after movies like Predator and Terminator 2: Judgment Day were released. Pedanticism aside, one should arguably not think too hard about a fictional video game minigun in the first place.
A severely stripped-down Browning M2HB machine gun is seen in some sections of the game, such as one involving a battle with an attack helicopter and another one preceding the game's finale. It reuses the Browning M2 model Half-Life, but completely omits it's ammo box and shield plates.
General Dynamics GAU-19/A
A General Dynamics GAU-19/A is apparently the rotary cannon used by Sheriff Rockwood during the final boss battle, mounted on his helicopter. It deals great damage and is capable of the destroying parts of the player's own helicopter, leaving them progressively more vulnerable.
Anachronistic since design work on the GAU-19/A only began in the 1980's, with actual production and adoption beginning much later.
Bundles of dynamite replace Half-Life's grenades and function similarly.
A flamethrower can be used by the player. It essentially functions like the flamethrower from Team Fortress Classic, using the view model of Half-Life's Gluon Gun.