====== Ammunition: Incendiary ======
The standard incendiary round used by XCOM personnel is a white phosphorus (WP) round; while it doesn't have the same armor-piercing capability, the ability to shower white-hot fragments that won't stop burning and obscure your enemy's visionis generally worth the added cost. They cost twice as much as standard ammunition and can be sized for weapons down to 10mm.

An experimental round is also available, currently only for the XB-PW101 'Solo' Heavy Pistol and the XB-PW201 'Kirk' Magnum Pistol; the plasma warhead bullet, essentially a one-shot power cartridge that compresses a pellet of hydrogen fuel, then releases it as a blast of ionized plasma. These weapons are often confused with energy weapons, with explosively shocking burning results. Isn't science grand? These cost ten times as much as similarly sized regular ammunition.

| Incendiary bullets were first developed for rifles and muskets in 1834, and were meant to ignite fuel, ammo, volatile gases, and other flammables. They contain a small amount of incendiary material such as saltpeter or white phosphorus inside. Starting in the 1930s, full-caliber AP and APHC rounds were sometimes given an incendiary element, resulting in “API” and “APHCI” special loads. Such combination munitions went on to replace basic incendiary ammo. Cost per shot multiplied by 1.5.