What it is
Builder Alliance is not a weaker version of normal Season 1 competition.
It is a different season path that exchanges City/Influence competition for construction/support facilities, Builder progression and Builder-specific rewards.
“Weak alliances should become Builders.”
The correct question is:
Will this alliance create more value competing for territory, or supporting the warzone through Builder systems?
Timing
Captured current-official rules:
- Builder Alliance opens in Week 4.
- Conversion can occur during Weeks 4–7.
- The decision is irreversible for the remainder of the season.
- R5 or authorized R4 management can perform the switch.
Captured current-official switching conditions
At the time of conversion:
- at least 10 members at 10M+ Power;
- Alliance Influence ≤ 1,000,000;
- captured Cities must be abandoned;
- no more than 3 captured Strongholds/fortresses per warzone.
Use the live Builder conversion screen as final authority because these requirements can be rebalanced.
What the alliance gives up
Captured current-official guidance:
- no continued City Race / Alliance Influence ranking path;
- Builder Alliance cannot continue normal City declaration competition;
- Builder ranking/goals replace the non-Builder Alliance Influence settlement path.
Current retained client evidence adds an important settlement nuance:
- Builder goal/ranking rewards are mutually exclusive with non-Builder Alliance Influence settlement rewards;
- Warzone Influence settlement rewards remain available.
Builder Alliance also has operating rules that matter after conversion.
Resource-facility storage
Current client:
- Builder Food / Iron / Coin production facilities store only 24 hours of production.
Practical advice
Collect at least daily. A Builder Alliance that ignores collection can waste the very economic value it converted to obtain.
Donation eligibility
Current client:
- a member must be in the Alliance for at least 24 hours before donating Building Materials.
Practical advice
Do not recruit a new member five minutes before a major Builder push and assume they can immediately contribute materials.
Builder EXP conversion
Current client:
- 10 Building Materials → 100 Builder Alliance EXP.
This is the direct progression relationship leadership should understand when setting donation goals.
Unused materials after season
Current client:
- unused Building Materials convert to Profession EXP at 1:100 after the season.
This is useful for cleanup guidance but should not encourage intentional hoarding if Builder upgrades remain valuable.
Failed donation
Current client:
- a failed donation returns the Building Materials.
Abandoning a Support Facility
Current client:
- abandoning a Support Facility destroys the facility/effect;
- spent materials are not refunded.
Do not abandon a Builder facility casually. The materials already spent are lost.
Captured current-official facility effects:
| Facility |
Core effect |
| Iron Factory |
Iron/Metal output + City/Base durability effect |
| Food Plant |
Food output + durability effect |
| Coin Factory |
Coin output + durability effect |
| Collection Depot |
Gathering Speed +10% |
| Engineering Hub |
Construction Speed +10% |
| Research Lab |
Research Speed +10% |
| Training Center |
Training Speed +5% |
| Medical Facility |
PvP unit death-rate reduction 5% in same warzone |
| Radar Station |
Hero Defense +5% in same warzone |
| Armory |
Hero Attack +5% in same warzone |
Captured current-official wording also gives a +10% durability contribution for Builder facilities where applicable.
Maintained-current research describes:
- up to 10 facility types;
- up to 3 facilities around a City area;
- facilities may be used to support allied Cities rather than only Cities the Builder Alliance previously owned.
Use the live Builder UI as final authority for placement-count and support-territory details.
Stay competitive if most of these are true
- Alliance can realistically hold meaningful Cities.
- Alliance activity covers declaration windows.
- Leadership has diplomacy and war coordination.
- A useful Influence settlement tier is realistically attainable.
- Members want territory warfare.
- Abandoning Cities would destroy more value than Builder facilities create.
Consider Builder if most of these are true
- Alliance cannot realistically maintain a competitive City position.
- Active hours make repeated City wars difficult.
- Stronger allied alliances can use your Builder support.
- Builder economic/combat facilities create more practical warzone value.
- Alliance Influence ceiling is too low for meaningful non-Builder settlement improvement.
- Members prefer stable contribution/progression over repeated losing territory wars.
Do not convert because of one bad fight
Builder is irreversible.
A lost City is not enough evidence by itself that the alliance should abandon the competitive path.
