Short answer: Use this Last Asylum: Plague Watchtower calculator to total Wood, Grain, and Herb for any upgrade range before you spend speed-ups or alliance help.
Upgrade calculator
Watchtower
Each row is one upgrade: level N → N+1. Totals sum wood, grain, herbs, and base build time for steps we have in the guide. Level pickers run through 30; if your target is above the last level with data (currently 30), totals only cover upgrades through that level.
*data can be incorrect too, please verify it before using
Totals for levels 1 → 2
Wood
47,700
Grain
47,700
Herbs
0
Time
48m 8s
Steps
1
Planning an upgrade? Share this calculator with your alliance so everyone can compare resource costs.
Community post (copy & paste)
I made a Watchtower upgrade calculator for Last Asylum: Plague players who want to see the total Wood, Grain, and Herb cost before committing. It covers level-to-level planning and is free to use.
Data compiled for Last Asylum Guide · Maintainer: Slaughter Queen · Game balance may change with patches.
About Watchtower
Priority: MediumThe Watchtower provides intelligence on incoming attacks, giving you advance warning before enemy marches arrive at your city. Higher levels increase detection range, giving you more time to shield, reinforce, or evacuate troops.
Upgrade Tips
- 1Always keep your Watchtower upgraded — a few minutes of warning can save millions in resources.
- 2Higher Watchtower levels reveal more information about incoming marches, including troop counts.
- 3Upgrade Watchtower before removing a shield in contested territory.