Crossover content

Crossover content is content added from a different game or other media, while the other game also adopts some content from Terraria, with mutual permission. Homages and references, however, are not crossover content.

Edge of Space

Edge of Space is a 2D sandbox game developed by Handyman Studios, similar in gameplay to Terraria, but in a space setting.

• S.D.M.G.

Reciprocal content

Edge of Space has a boss, "Omegatron", which is based on Skeletron and Skeletron Prime.

Pixel Piracy

Pixel Piracy is a 2D real-time strategy game developed by Quadro Delta and published by Re-Logic. To celebrate the publishing deal, version 1.2.4 added crossover content into Terraria.

• Falcon Blade
• Pirate Minion
• Ginger Beard
• Pillagin' Me Pixels
• Sail

Reciprocal content

The weapon Starfury is present in Pixel Piracy.

Project Zomboid

Project Zomboid is a apocalyptic zombie survival game that recieved crossover content such as the “Spiffo Plush” a 1/1500 (0.07%) drop from zombies. It was added in the 1.4.4 update.

Worms 3

Worms 3 is a mobile game which in 2013 received crossover content from Terraria. In return, the mobile version of Terraria received some Worms 3 content in the 2014 Hardmode Update. This content has since been removed from Terraria's Android and iOS versions, but is still available on the Windows Phone and versions.

• Suspicious Looking Apple
• Old Walking Stick
• Strange Looking Tombstone
• Holy Hand Grenade

Reciprocal content

Worms 3 received customization sprites looking like the Molten Helmet, Hallowed Mask, Mythril Hood, Mining Helmet, Top Hat, and Archaeologist's Hat, as well as five Terraria-themed gravestones and Terraria sound effects ("speechbank").

Dungeon Defenders 2

Dungeon Defenders 2 is a 3D tower-defense game developed by Chromatic Games which has crossover content in Terraria since version 1.3.4. Its setting is called "Etheria" so elements from this game are called "Etherian" to distinguish from the Terrarian versions when ambiguity could exist, such as for example between Etherian Mana and Mana, or Etherian Goblin and Goblin.

The game features four core classes, which are represented in Terraria by the selection of player equipment.

Class	Sentries	Tier 2 Armor	Tier 3 Armor	Tier 2 Weapon(s)	Tier 3 Weapon	Accessory
Apprentice	Flameburst	Apprentice	Dark Artist	Tome of Infinite Wisdom	Betsy's Wrath	Apprentice's Scarf
Huntress	Explosive Trap	Huntress	Red Riding	Phantom Phoenix	Aerial Bane	Huntress's Buckler
Monk	Lightning Aura	Monk	Shinobi Infiltrator	Sleepy Octopod Ghastly Glaive	Sky Dragon's Fury	Monk's Belt
Squire	Ballista	Squire	Valhalla Knight	Brand of the Inferno	Flying Dragon	Squire's Shield

Sentries and armor sets are bought with Defender Medals from the Tavernkeep when the corresponding tiers are unlocked (Tier 1 is available from the start, one Mechanical Boss defeated in Hardmode for Tier 2, Golem defeated for Tier 3). Tier 2 weapons and accessories are dropped by the Ogre while Tier 3 weapons are dropped by Betsy.

Other content includes:

• Tavernkeep
• Ale Tosser
• Flickerwick and Creeper Egg
• Hoardagron and Dragon Egg
• Propeller Gato and Gato Egg
• Eternia Crystal and Eternia Crystal Stand
• Defender Medal
• Etherian Mana
• Old One's Army

All the crossover content in Terraria is obtained through the Tavernkeep NPC, either directly from him or indirectly by triggering the Old One's Army event.

Reciprocal content

As part of the crossover, Dungeon Defenders 2 incorporated some Terraria content as well.

• The Dryad became an additional hero class, able to use Vile Powder, Purification Powder, Fallen Stars, slimes, Harpies, Moss Hornets, and Angry Nimbuses to attack enemies. She also retains her Dryad's Blessing, and can use Leaf Wings. In that game, she is also able to transform between her normal form and a corrupt form, modifying the effects of her powers.
• Many Terraria weapons became available for certain heroes, such as the Meowmere, Lunar Portal Staff, Demon Scythe, Tsunami, and more.
• A new map, the Forest Biome, was added, featuring Demon Eye enemies, the Eye of Cthulhu boss, and various other Terraria elements.

Minecraft

Minecraft is a 3D sandbox game developed by Mojang Studios which has crossover content in Terraria since 1.2.1.

• Creeper set
• One of the title messages says: "Terraria: Also try Minecraft!"

Reciprocal content

• Jens Bergensten has officially claimed that the summon mechanism of the wither, one of the bosses in Minecraft, was inspired by the boss summon mechanics of Terraria.
• One of Minecraft's main menu splash texts says: "Also try Terraria!".

One Drop

One Drop is a yoyo manufacturer. In 1.3.0.1, the following One Drop yoyos were added to Terraria:

• Rally
• Code 1
• Valor
• Cascade
• Format:C
• Gradient
• Chik
• Code 2
• Yelets

Reciprocal content

In turn, One Drop released real-life yoyos designed after the Terrarian ,Kraken, Biomes, Weapons, And dyes .

Don't Starve Together

Don't Starve is a series of survival video games by Canadian studio Klei Entertainment. 1.4.3 saw the addition of one boss, one music track, a new secret seed, and a number of items inspired by these games:

• Ham Bat
• Bat Bat
• Pew-matic Horn
• Lucy the Axe
• Tentacle Spike
• Weather Pain
• Abigail's Flower
• Houndius Shootius
• Magiluminescence
• Bone Helm
• Radio Thing
• Eyebrella
• Garland
• Bernie's Button
• Glommer's Flower
• Monster Meat
• Deerclops Eyeball
• Eye Bone
• Monster Lasagna
• Froggle Bunwich
• The Bereaved
• The Firestarter
• The Gentleman Scientist
• The Strongman
• Gentleman's set
• Firestarter's set
• Deerclops
• Deer Thing
• Deerclops Mask
• Deerclops Trophy
• Deerclops Relic
• Treasure Bag (Deerclops)
• Music Box (Deerclops)

• Two new Hairstyles based on Wilson and Willow
• Rare clouds based on Don't Starve characters
• Secret seed "The Constant"

Reciprocal content

Along with 1.4.3's release, Klei Entertainment released an update for Don't Starve Together which added the Eye of Cthulhu and Twins, 5 new eye-themed boss rewards, and 26 new skins for existing items.

Stardew Valley

Stardew Valley is a farm life simulation game developed by ConcernedApe. 1.4.4 added 3 new items and special Dryad's cutscene.

• Blue Chicken and Blue Chicken Egg
• Junimo and Stardrop
• Joja Cola

When the players holds Joja Cola in the inventory, "Status" button in Dryad's menu is replaced with "Purify". If the player press this button, Joja Cola will be consumed and open a portal to Stardew Valley's world. The Junimo then jumps out of this portal and pulls out Stardrop that the player can collect in the future.

Reciprocal content

Stardew Valley's 1.6 update introduced 1 new item from terraria: the Meowmere sword (albeit not as powerful as it is in Terraria). Obtaining said sword sees the player throwing a doll into lava, and encountering a Bone Serpent and a Forest Pylon.

• Technically, there are 2 new items - the aforementioned Meowmere, and a ''Far Away Stone,'' (which resembles a forest pylon removed from its pedestal) although this item is one-per-world and is only used in obtaining the Meowmere.