Master Mode
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Master Mode-Only Content: This information applies only to Master Mode and Master Mode worlds.
Not to be confused with Hardmode, which is triggered by defeating the Wall of Flesh.
"Master" redirects here. For other uses, see Master (disambiguation).
"Game over man, game over!"
Master Mode is an option that can be selected during world creation. It further increases the difficulty of the game beyond Expert Mode, as well as offering Master Mode–exclusive items. Like Expert Mode, Master Mode begins the moment the Master Mode world has been created, and cannot be altered after that by the player. In Journey Mode, Master Mode can be toggled using the difficulty slider.
All Expert Mode changes also apply to Master Mode, including increased drop chances, modified AIs, etc. All Expert-exclusive content is available in Master Mode.
General
- Most enemies have roughly 50% more health and damage and 10% more knockback resistance than in Expert Mode (thus three times as much health and damage and 20% more knockback resistance than in Classic Mode).
- For example, a Blue Slime has the following stats in the different modes:
Stat 
Classic
Expert
Master
Max. health 25 50 75 Damage 7 14 21 KB resistance 0% 10% 20%
- Like in Expert Mode, weaker enemies may get an additional multiplier to the above stats upon entering Hardmode and another after Plantera has been defeated.
Bosses
- Bosses gain flat 50% increase in damage and 27.5% in health to their Expert Mode values, rounded up. Similar to Expert Mode, their health is also boosted in multiplayer for each player.
- Thus, a boss's health in singleplayer and multiplayer can be calculated from its Expert Mode health stat. See Expert Mode § Bosses for Expert Mode health calculation.
Player
- Players will drop all of their coins upon death instead of 50% / 75%.
- Players gain an additional accessory slot that is only active while in a Master Mode world. This stacks with the Demon Heart, resulting in the maximum attainable slots to be 7.
- Damage taken is fully reduced by the player's defense value instead of 50% / 75%.
- The following debuffs have 250% duration (instead of Expert mode's 200% duration) when inflicted on players:[1]
Master-exclusive items
- Bosses defeated in Master Mode drop their Treasure Bag, which contains the Expert-exclusive content of the boss. In addition, they drop Master-exclusive items separately, which have the
rarity.
- Bosses always drop their respective relic, a shiny statue resembling the boss.
- They also have a 25% chance of dropping an item which summons a pet, light pet, or mount that either resembles the boss or is closely themed after it.
- Finally, the Eye of Cthulhu always drops 0x33's Aviators, which – prior to 1.4.0.1 – could only be obtained by defeating it in an Expert world with a Hardcore character.
| Boss | Relic | Summoning item | Summoned entity |
|---|---|---|---|
| King Slime |  King Slime Relic |
 Royal Delight |
 Slime Prince(pet)
|
| Eye of Cthulhu |  Eye of Cthulhu Relic |
 Suspicious Grinning Eye |
 Suspicious Eye(pet)
|
| Eater of Worlds |  Eater of Worlds Relic |
 Writhing Remains |
 Eater of Worms(pet)
|
| Brain of Cthulhu |  Brain of Cthulhu Relic |
 Brain in a Jar |
 Spider Brain(pet)
|
| Queen Bee |  Queen Bee Relic |
 Sparkling Honey |
 Honey Bee(pet)
|
| Skeletron |  Skeletron Relic |
 Possessed Skull |
 Skeletron Jr.(pet)
|
| Deerclops |  Deerclops Relic |
 Deerclops Eyeball |
 Deerclops(pet)
|
| Wall of Flesh |  Wall of Flesh Relic |
 Goat Skull |
 Goat Mount(mount)
|
| Boss | Relic | Summoning item | Summoned entity |
|---|---|---|---|
| Queen Slime |  Queen Slime Relic |
 Regal Delicacy |
 Slime Princess(pet)
|
| The Twins |  Twins Relic |
 Pair of Eyeballs |
 Rez and Spaz(pet)
|
| The Destroyer |  Destroyer Relic |
 Deactivated Probe |
 Destroyer-Lite(pet)
|
| Skeletron Prime |  Skeletron Prime Relic |
 Robotic Skull |
 Mini Prime(pet)
|
| Plantera |  Plantera Relic |
 Plantera Seedling |
 Plantera Seedling(pet)
|
| Golem |  Golem Relic |
 Guardian Golem |
 Toy Golem(light pet)
|
| Empress of Light |  Empress of Light Relic |
 Jewel of Light |
 Fairy Princess(light pet)
|
| Duke Fishron |  Duke Fishron Relic |
 Pork of the Sea |
 Tiny Fishron(pet)
|
| Lunatic Cultist |  Lunatic Cultist Relic |
 Tablet Fragment |
 Phantasmal Dragon(pet)
|
| Moon Lord |  Moon Lord Relic |
 Piece of Moon Squid |
 Moonling(pet)
|
| Boss | Relic | Summoning item | Summoned entity |
|---|---|---|---|
| Mourning Wood |  Mourning Wood Relic |
 Hexxed Branch |
 Tree Mount(mount)
|
| Pumpking |  Pumpking Relic |
 Pumpkin Scented Candle |
 Jack 'O Lantern(light pet)
|
| Everscream |  Everscream Relic |
 Shrub Star |
 Everscream Sapling(pet)
|
| Santa-NK1 |  Santa-NK1 Relic |
 Toy Tank |
 Santank Mount(mount)
|
| Ice Queen |  Ice Queen Relic |
 Frozen Crown |
 Ice Queen(pet)
|
| Dark Mage |  Dark Mage Relic |
 Dark Mage's Tome |
 Book Mount(mount)
|
| Ogre |  Ogre Relic |
 Ogre's Club |
 Baby Ogre(pet)
|
| Betsy |  Betsy Relic |
 Betsy's Egg |
 Itsy Betsy(pet)
|
| Flying Dutchman |  Flying Dutchman Relic |
 The Black Spot |
 Pirate Ship Mount(mount)
|
| Martian Saucer |  Martian Saucer Relic |
 Cosmic Skateboard |
 Alien Skater(pet)
|
Notes
- In multiplayer, Master Mode-exclusive pet/mount summon items will be determined per player. They will drop for any player that dealt damage to the boss when it is defeated. Relics, on the other hand, will only drop one at a time.
Trivia
- Master Mode's descriptive text "Game over man, game over! ", is a quote from the 1986 American science fiction action movie Aliens.
- In the world selection menu, the text for a Master Mode world is red. Journey Mode world names are pink, Classic world names are white, and Expert world names are orange.
- Master Mode was originally intended to be unlocked by beating Expert Mode, but it was later decided that it would be made available to all players.
History
- Desktop 1.4.0.1: Introduced.
- Console 1.4.0.5.4.1: Introduced.
- Switch 1.4.0.5.5: Introduced.
- Mobile 1.4.0.5.0: Introduced.