Structure alternatives

FortressMC replaces most structure-dependent mobs and items with repeatable spawns, drops, recipes, and world features. These systems are primarily implemented by Mob Controller and Misc Tweaks.

General replacements

Vanilla source	FortressMC source
Strongholds and end portals	Custom portal grid located with eyes of ender
Nether fortresses	Wither skeletons in soul sand valleys; Nether wart patches
Bastion remnants	Piglin brutes, hoglin drops, charged-creeper interactions, and generated gilded blackstone
Ocean monuments	Guardians and elder guardians spawned in deep oceans
Ancient cities	Warden drops
Trial chambers	Breeze and bogged drops
End cities and ships	Shulker spawns and dragon head drops
Archaeology structures	Suspicious sand and gravel clusters
Mineshaft cobwebs	Crafting nine string into one cobweb
Rare banner patterns	Shapeless crafting recipes

Smithing templates

Smithing templates are dropped when the corresponding mob is killed by a player. Looting modifies the drop calculation.

Mob	Template	Base chance
Elder guardian	Tide	20%
Warden	Ward	15%
Warden	Silence	10%
Piglin brute	Netherite Upgrade	0.4%
Hoglin	Snout	5%
Wither skeleton	Rib	6%
Breeze	Bolt	3%
Bogged	Flow	4%
Shulker	Spire	5%
Enderman	Eye	3%
Drowned	Coast	2.5%
Husk	Dune	2%
Witch	Wild	2%
Pillager	Sentry	2%
Evoker	Vex	5%

Music discs

Several music discs are obtained through configured mob interactions rather than structure chests.

Interaction	Disc
Charged creeper kills a piglin brute	Pigstep
Charged creeper kills a breeze	Precipice
Charged creeper kills a bogged	Creator, with a 75% chance, or Creator Music Box, with a 25% chance
Warden kills a charged creeper	Otherside

The Cat and 13 discs are also available as rare additional fishing drops.

Unavailable content

Trial spawners, vaults, ominous trial keys, ominous bottles, and explorer maps leading to structures have no replacement source.