Sanctuary level
Sanctuary 28
Mid Game · The Long Siege
Sanctuary 21–29
To upgrade your Sanctuary from level 27 to 28, you need Research Lab 27, Barracks 27, Lumberyard 13 and 326 Clinic stars. It costs 731M Grain, 731M Timber and 237M Herbs and takes 60d 17h 20m before any speed-ups. It raises your heroes’ level cap from 135 to 140.
What you need
To upgrade from Sanctuary 27 to 28.
- Research Lab 27 · my take: keep up with your Sanctuary
- Barracks 27 · my take: keep up with your Sanctuary
- Lumberyard 13 · my take: park for later
- 326 Clinic stars. Upgrade your Wards to earn them.
Those buildings have needs of their own. The Sanctuary build path plans every step from Sanctuary 27, on as many build queues as you have.
What it costs
Base costs and times, before research, VIP and alliance help.
Grain- 731M
Timber- 731M
Herbs- 237M
- Time
- 60d 17h 20m
- Might
- +275K
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 23d 19h 30m. 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 28, added up:
Grain- 2.63B
Timber- 2.63B
Herbs- 845M
- Time
- 217d 7h 15m
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
- 140 (+5)
- Hero HP
- 47K (+1,600)
- Hero ATK
- 674 (+27)
- Hero DEF
- 674 (+27)
- Might from this upgrade
- +275K
What it opens
Research (Research Lab 28)
- 25 more levels of research you already have
It also lets 30 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 28 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 29 asks for Research Lab 28, Alliance Hall 28 and Herb Garden 13, and takes 78d 22h 32m. Getting those ready while this upgrade runs keeps your builders busy.

