Prototype


 * Armor and clothing:
 * Prototype medic power armor, a U.S. Army variant of T-45d power armor in Fallout 3.
 * Prototype hazmat suit, a prototype hazmat suit in Fallout 76.


 * Miscellaneous items:
 * Prototype X-13 boots, a quest item part of the Stealth Suit Mk II
 * Prototype X-13 chest plate, a quest item and part of the Stealth Suit Mk II in the Fallout: New Vegas add-on Old World Blues.
 * Prototype X-13 gloves, a quest item and part of the Stealth Suit Mk II in the Fallout: New Vegas add-on Old World Blues.


 * Weapons:
 * AER14 prototype, an energy weapon in Fallout: New Vegas.
 * Tesla-Beaton prototype, a unique weapon in Fallout: New Vegas.
 * Prototype UP77 "Limitless Potential", a unique weapon in Fallout 4.
 * Pulse rifle prototype, an energy weapon in Fallout Tactics.


 * Other:
 * MPLX "Novasurge" prototype plasma pistol, a paper note in the Fallout 3 add-on Mothership Zeta.
 * Stealth Boy Mark II prototype, an enhanced Stealth Boy in Fallout: New Vegas.