A health bonus (or health potion) is an item that is introduced in E1M1: Hangar of the first Doom episode Knee-Deep in the Dead, alongside its armor equivalent, the armor bonus. Appearing in the very first room of the game, the two items are likely to be the first to be picked up by the player. It has the appearance of a small, round blue bottle with a glowing liquid inside. Doom 64 has a very similar, albeit slightly more angular design with a longer neck. Picking one up increases the player's health by 1% up to a maximum of 200%, except in Doom 64 and in console ports such as the Atari Jaguar and Sony PlayStation versions, where it instead increases health by 2% per bottle.
Health bonuses are included in the items percentage displayed at the end of each level.
|Health bonus data|
|Thing type||2014 (decimal), 7DE (hex)|
|Enum||MT_MISC2 (45) - Doom|
MT_ITEM_BONUSHEALTH (49) - Doom 64
|Appears in||Shareware Doom|
Doom II/Final Doom
Doom 64/Lost Levels
|Frames||6 [ABCDCB] - Doom|
4 [ABCD] - Doom 64
|Flags list|| 0: Can be picked up|
23: Affects item %
The IWADs contain the following numbers of health bonuses per skill level:
- Health bonuses are worth 2% in all ports derived from the Atari Jaguar codebase, including the Sega 32X, 3DO, Sony PlayStation, Sega Saturn and Game Boy Advance editions.
- The upper limit of 200% can be altered with DeHackEd.
- In Doom RPG, the health bonus is called a health vial. It increases the player's health by 4 units.
- After the score system was removed following the Doom press release beta, demonic daggers functioned as health bonuses at one point in development, as seen during a visit to id Software.
|Items from Doom, Doom II and Doom 64|
|Health:||Health bonus • Stimpack • Medikit|
|Armor:||Armor bonus • Armor • Megaarmor|
|Powerups:||Berserk • Computer area map • Invulnerability • Light amplification visor • Megasphere • Partial invisibility • Radiation shielding suit • Supercharge|
|Keys:||Keycard • Skull key • Demon Key|
|Weapons:||Fist • Chainsaw • Pistol • Shotgun • Super shotgun • Chaingun • Rocket launcher • Plasma gun • BFG9000 • Unmaker|
|Ammo:||Backpack • Clip • 4 shotgun shells • Rocket • Energy cell • Box of bullets • Box of shotgun shells • Box of rockets • Energy cell pack|