Angled Surfaces

Angled Surfaces
Availability
Introduced in	Age of Empires IV
Civilization	All civilizations
Age	Imperial Age
Research
Researched at	Blacksmith Forge Meinwerk Palace
Prerequisite(s)	Wedge Rivets
Wood	150
Gold	350
Research time	60 seconds
Effect
Ranged armor +1 (non-siege)

Angled Surfaces is a technology in Age of Empires IV that can be researched at the Blacksmith or Forge in the Imperial Age. Once researched, it increases the ranged armor of all non-siege units by 1.

Civilization bonuses

• Abbasid Dynasty: Research speeds are +15%/+20% faster while Golden Age tiers 2/3 are active. If Preservation of Knowledge has been researched, this technology costs -20%.
• Ayyubids: Research speeds are 25% faster while Golden Age tier 2 is active. The technology is granted for free when advancing to the Imperial Age or fourth wing with the Master Smiths branch of the Military Wing
• Byzantines: Research speeds are 30% faster per water level at buildings within the influence of a Cistern with the Dialecticus ability active.
• Chinese and Zhu Xi's Legacy: The technology researches 150% faster when the Blacksmith is supervised by an Imperial Official. For Zhu Xi's Legacy, this can be improved to 300% after researching Regional Inspection
• Delhi Sultanate: The technology is free, but takes 12x as long to research (720 seconds instead of 60 seconds).
• Holy Roman Empire and Order of the Dragon: The technology cost is reduced and research speed is increased by 50% if researched at the Meinwerk Palace.
• House of Lancaster: This technology is 15% cheaper if King's College has been constructed.
• Malians: Technologies take less time to research based on how much gold has been obtained through trade.

Changelog

• Originally, the base research time for the Delhi Sultanate was 5x default (300 seconds). With update 8324, this was increased to 15x default (900 seconds). With Season Two Update 17718, it takes 12x default (720 seconds).

Campaign version

Because the original four campaigns have not been rebalanced since the release of the game, Angled Surfaces has different stats in those campaigns.

• It costs 75 food, 450 gold and is researched at the Arsenal instead of the Blacksmith
• The Mongols can research Improved Angled Surfaces for an additional 525 stone to further increase ranged armor by +1 (+2 total)