Incapacitation (XC1)

Incapacitation is a mechanic in Xenoblade Chronicles and Future Connected. If the of a party member reaches zero, they are incapacitated. They can be revived by the player at the cost of one bar of the by moving over the dead party member and pressing B. If the player character dies and at least one bar of the Party Gauge is filled, other party members will make it their top priority to go over to the player and revive them. If the party gauge is not full enough or if all party members are dead, the battle ends and the player will be warped back to the last or  visited. The only time this causes a "true" game over, meaning the game goes back to the title screen, is during the final battle of Future Connected.

Enemies cannot revive each other; an enemy that loses all HP is immediately removed from battle (though their body remains an obstruction to movement for a few seconds). A few boss battles end before their HP can be completely depleted.