Sanctuary level
Sanctuary 21
Mid Game · The Long Siege
Sanctuary 21–29
To upgrade your Sanctuary from level 20 to 21, you need Research Lab 20, Training Grounds 20, Lumberyard 10 and 254 Clinic stars. It costs 85.5M Grain, 85.5M Timber and 27.6M Herbs and takes 6d 16h 20m before any speed-ups. It raises your heroes’ level cap from 100 to 105.
What you need
To upgrade from Sanctuary 20 to 21.
- Research Lab 20 · my take: keep up with your Sanctuary
- Training Grounds 20 · my take: keep up with your Sanctuary
- Lumberyard 10 · my take: park for later
- 254 Clinic stars. Upgrade your Wards to earn them.
Those buildings have needs of their own. The Sanctuary build path plans every step from Sanctuary 20, on as many build queues as you have.
What it costs
Base costs and times, before research, VIP and alliance help.
Grain- 85.5M
Timber- 85.5M
Herbs- 27.6M
- Time
- 6d 16h 20m
- Might
- +81.5K
Build speed bonuses cut that time by a share, not a fixed amount, so they matter more the longer a build takes. With every lasting bonus at its most (+155%), this upgrade takes about 2d 14h 52m. Where that speed comes from:
- Research: Rapid Construction I, Rapid Construction II, Rapid Construction III, Rapid Construction IV
- +25%
- VIP 12
- +50%
- Alliance research: Fast Build
- +25%
- Month Card
- +5%
- Decoration: Twin Dragon Brooch
- +50%
Every Sanctuary upgrade from 1 to 21, added up:
Grain- 257M
Timber- 257M
Herbs- 82.8M
- Time
- 24d 7h 34m
What it gives you
Your Sanctuary sets your heroes’ level cap and gives every hero HP, ATK and DEF, whatever squad they’re in.
- Hero Level Cap
- 105 (+5)
- Hero HP
- 35.3K (+1,700)
- Hero ATK
- 504 (+25)
- Hero DEF
- 504 (+25)
- Might from this upgrade
- +81.5K
What it opens
More of a building
- Weaving Workshop: you can have 5 now
Research (Research Lab 21)
- Hero: Warrior Mastery II, Ranger Mastery II and Warlock Mastery II
- Soldier: Survival Training VII and Load Training VII
- Offensive Tactics (a new tree): Bloody Battle I, Rapid Assault I, High Alert I and Heavy Duty 1
- Defensive Tactics (a new tree)
- 66 more levels of research you already have
It also lets 29 of the buildings you already have go higher. From Sanctuary 7 on, a building can only be as high as your Sanctuary, which is why the Sanctuary sets the pace for everything.
Where it fits
Sanctuary 21 is part of the mid game (Sanctuary 21–29). Level up and contribute to your alliance. The hard part: upgrades stretch from days to weeks.
Next up, Sanctuary 22 asks for Research Lab 21, Warrior Statue 21 and Herb Garden 10, and takes 8d 16h 26m. Getting those ready while this upgrade runs keeps your builders busy.

