TECHNOLOGY · THE FORGOTTEN
Boiling Oil
A former Persian Castle technology that increased Castle bonus damage against Rams. The Definitive Edition replaced it with Kamandaran.

Overview
A former Persian Castle technology that increased Castle bonus damage against Rams. The Definitive Edition replaced it with Kamandaran.
Effect and affected units
Boiling Oil changes A former Persian Castle technology that increased Castle bonus damage against Rams. The Definitive Edition replaced it with Kamandaran. Read the named target carefully: this effect applies only to the units, buildings, or economy described in its entry. This is the main reason to research it; compare the affected units with the army you expect to field.
Research cost and timing
Research is available in The Forgotten at the Castle. The recorded cost is not separately recorded, and the research time is not separately recorded. Consider whether the upgrade will affect enough units or workers to repay that investment before the match is decided.
Effect and research timing
A former Persian Castle technology that increased Castle bonus damage against Rams. The Definitive Edition replaced it with Kamandaran. Research at: Castle. This is a historical entry; check its release context because it is not necessarily available in the current standard technology set. Its value depends on which units receive the effect and how often they take part in combat; timing it before a major engagement can improve the whole eligible group.
Research details
- Status
- Removed in Definitive Edition
- Civilization
- Persians
- Research building
- Castle
- Former effect
- Castles gained +9 bonus damage against Rams
- Replacement
- Kamandaran
Research requirements and effects for this entry.
- Also known as
- Boiling Oil · Boiling Oil (Age of Empires II)
- Focus
- Removed in Definitive Edition
- Signature / category
- Historical technology
- Release / context
- The Forgotten
- Region
- The Forgotten
- Classification
- Legacy technology