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Castle Upgrade Calculator

Select your current and target castle level to see the exact resources you need and any building prerequisites along the way. Brilliance milestones — including the important +5 Hero Level unlocks at Castle 50 and Castle 60 — are highlighted inline.

Castle Upgrade Calculator

Total resources and building requirements for any castle level range (21–65).

ResourceTotal Needed
Primary Material(levels 21–40)162.4M
Secondary Material(levels 29–40)34.0M

Building Prerequisites

  • Guild (25)
  • Training Ground (25)
  • Research Cottage (26)
  • Hospital (26)
  • Guild (27)
  • Training Ground (27)
  • Research Cottage (28)
  • Hospital (28)
  • Guild (29)
  • Training Ground (29)
  • Research Cottage (30)
  • Hospital (30)
  • Guild (31)
  • Training Ground (31)
  • Research Cottage (32)
  • Hospital (32)
  • Guild (33)
  • Training Ground (33)
  • Research Cottage (34)
  • Hospital (34)

Data verified from infographic (2026-02-26). Levels 41–65 are for new servers (108+). Resource names for levels 41–65 are approximate — exact icons unconfirmed.

Notes on the data:

  • Levels 21–40 use the NEW Version 2025 resource structure (two resource columns).
  • Levels 41–65 are for new servers (108+) and use a different four-resource structure. The “Premium Resource” column for levels 41+ shows small counts (e.g. 126–388) likely representing Dragon Essence or a similar scarce currency.
  • Resource column names are inferred from icon context — exact in-game names are unconfirmed for levels 41+.

Data verified from community infographic, 2026-02-26.

Fan-made guide. Not affiliated with River Game HK Limited. Game data may be inaccurate.