Blizzard has
updated its Diablo III page with some details on the game's health system, which primarily utilizes health globes to restore the health of a player and his party without the use of potions or spells.


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While much of this has been known for years, the Blizzard post does offer some insight into how boss encounters may work given the game's reduced focus on quaffing sweet potions.
Major boss fights make unique use of health globes. Each boss battle includes a custom-designed means of utilizing these globes to regain health