Work in Progress: The Knights Templar and House of Lancaster civilizations aren't fully updated and miss stats, abilities and upgrades.
Explorer will continue to be updated over the next few weeks for both old and new civs.
Defensive Building

Stone Wall Tower

Delhi Sultanate
Heavy defensive tower that fires a springald. Must be built on a Stone Wall segment. Infantry can use the tower to access the top of the walls.

Patch History

Season 10 Update

Cost decreased from 300 to 250 stone.

Season Two Update

Stone buildings now cost Stone to repair instead of Wood

Added new visual effect to Keeps and Stone Wall Towers when burning oil is triggered.

Costs
250
1:30
30003900 Hitpoints
6072 50 Ranged Attack
010 Fire Armor
50 Ranged Armor
Damage15.48DPS 18.58 12.9
Attack Speed3.875S
Range9TILES
Line of Sight14.8TILES 15 MAX

Technology Upgrades

Slow-Burning Defenses

Age III

Defensive Technology

Increase the fire armor of Stone Wall Towers, Keeps, and Outposts by +10.

Costs
3:45
Unique to Delhi Sultanate

Incendiary Arrows

Age IV

Ranged Technology

Flammable munitions grant non-gunpowder ranged units a siege arrow or bolt when attacking buildings and increase their damage by +20%.

Costs
23:00

Boiling Oil

Age III

Defensive Technology

Towers and Keeps gain a boiling oil attack against nearby units that deals 30 damage.

Costs
7:30

Court Architects

Age III

Building Technology

Patronage of the finest builders increases all building health by +30%.

Costs
18:00

Age of Empires IV© Microsoft Corporation. AoE4World.com was created under Microsoft's "Game Content Usage Rules" using assets from Age of Empires IV , and it is not endorsed by or affiliated with Microsoft.