History Main / UniversalAmmunition

** ''VideoGame/HalfLife1'''s pistol and submachine gun use the same ammunition. This isn't a problem with regards to the Glock and [=MP5=], using 9mm pistol ammo, although FridgeLogic arises in how Gordon transfers the ammo between guns (he likely does so the same way he [[OneBulletClips transfers bullets between half-used magazines]] - that is, [[HandWave his HEV suit does it for him]]). However, the Hi-Def pack - an overall graphical upgrade - changes the Glock into a Beretta and the [=MP5=] into an M4 assault rifle. That creates a new problem - the M4 uses 5.56x45mm ammo, not 9x19mm. Another problem comes when combining the ''Opposing Force'' expansion with the Hi-Def pack, which adds an M249 SAW that should share ammo with the M4, but doesn't. This was fixed in the UsefulNotes/PlayStation2 port, which used the hi-def models, added a separate ammo type for the M4, and does not include the weapons from ''Opposing Force''.

* ''VideoGame/{{Exhumed}}'' (a.k.a. ''[[MarketBasedTitle Powerslave]]'') has a variation in the UsefulNotes/SegaSaturn and UsefulNotes/PlayStation versions in which the ammo pickups are all generic blue orbs that refill whatever weapon you are holding at the time, but the weapons themselves all have different ammo pools beyond that.

** Downplayed with the HS Produkt VHS-2, which as of 2024 is only officially available in 5.56mm, but comes with replaceable magwells that can be swapped out to fit different magazines that take ammo of those dimensions: as standard the Croatian military uses it with a magwell to take G36 magazines (given that's what they had the most of before adopting the VHS), though they've also made ones to take STANAG mags (primarily for the Springfield Hellion, a semi-auto version sold in America, since AR-15 mags are by far the most common there) and those of the FAMAS (made for French military trials to replace that weapon).

** The later Sterling submachine gun can take Sten magazines... but the Sten can't take Sterling magazines. The magazines for the Sterling are positioned just slightly further enough into the bolt way that attempting to use them with a Sten would result in the rear of the magazine being fouled by the breech block, meaning that the latter couldn't go forward. If the Sterling magazine were to be positioned in more or less the same place as a Sten magazine, the top round would now be slightly out of alignment with the breech block and so the Sten still wouldn't be able to fire. This was an intentional design choice that was made in order to force government buyers into purchasing both the Sterling magazines and the actual Sterling gun rather than simply buying the magazines only and carrying on with any Stens they might have had on hand. Interestingly, the Lanchester submachine gun (an MP 28/II clone produced by the same company that would go on to produce the Sterling gun) can be used with Sterling magazines, and magazines from the Lanchester can be used with both the Sten and the Sterling.

** ''[[VideoGame/GhostReconBreakpoint Breakpoint]]'' has separate classes of ammo with their own pickups, but only has six ammo types: 9mm, .45, 12-gauge, 5.56, 7.62, and .338. This means a lot of weapons use ammo types that don't make any sense because that's the closest the game has to what it uses in reality, like the Five-Seven and P90 (both using 5.7x28mm in reality) using 5.56mm ammo, the Desert Eagle using .338 rounds that are otherwise exclusive to sniper rifles (and which is split between guns that actually fire .338 and those that are turning the same ammo into .50 BMG), or the 7.62x35mm Honey Badger, 7.62x39mm AK-47, 7.62.51mm [=MK17=], and 7.62x54mmR SVD-63 all sharing the same ammo.

** ''[[VideoGame/GhostReconBreakpoint Breakpoint]]'' has separate classes of ammo with their own pickups, but only has six ammo types: 9mm, .45, 12-gauge, 5.56, 7.62, and .338. This means a lot of weapons use ammo types that don't make any sense because that's the closest the game has to what it uses in reality, like the Five-Seven and P90 (both using 5.7x28mm in reality) using 5.56mm ammo, the Desert Eagle using .338 rounds that are otherwise exclusive to sniper rifles, or the 7.62x39mm AK-47, 7.62.51mm [=MK17=], and 7.62x54mmR SVD-63 all sharing the same ammo.