The New Activity Score Is Live

Two weeks ago we said the Activity Score was being rebuilt around what members actually do rather than how strong a clan looks on paper. It went live today. All 77,148 scored clans on the site have been recalculated.

What the score is made of now

Roster activity over the last 14 days, worth 55 points. The share of your members who have been seen doing something recently: donating, receiving, gaining trophies, gaining experience, or upgrading a Town Hall. It is a share rather than a headcount, so a 15 man clan is measured the same way as a 50 man one.

Donations per member, worth 35 points.

War frequency, worth 5 points. It is self-reported, so it survives as a tie-breaker and nothing more.

Having any war win streak at all, worth 5 points. Also a tie-breaker.

CWL league, worth nothing. It used to be 30 of the 100.

Why this is more accurate

The old score struggled to tell a full clan from an empty one.

Here is the case that pushed the change. Take one clan, same league, same war record, same everything, and compare it with 90% of its roster active against 10% active. The old formula gave it 80 either way. The new one gives it 90 against 46.

The reason the old score behaved like that is the one we published a fortnight ago: 96.4% of clans where almost nobody has donated all season still hold a CWL league, against 97.8% of thriving clans. Under two points of separation, carrying 30 points of the score.

Roster activity and donation rate might sound like the same measurement twice. We checked across 11,154 clans where both are known and they agree far less than you would expect, disagreeing sharply for roughly one clan in eight. Donation rate asks how much a clan does. Roster activity asks how many of them still turn up. Plenty of clans score well on one and badly on the other.

What actually moved

Of 77,148 clans, 71,852 changed score, and about 41,000 of those moved by 10 points or more.

It went in both directions almost evenly. 20,547 clans rose by 10 or more, 20,486 fell by 10 or more. A clan that went up has more of its roster turning up than the old number ever credited it for. A clan that fell was being carried by a league badge or a self-reported setting.

One thing we said we would add, and did not

The last post said the score would read how recently a clan genuinely warred, taken from the war log instead of from a setting. We built it, measured it, and cut it.

The war log privacy toggle is the reason. Among clans with a public war log, 34,342 of 45,293 have a usable date. Among clans with a private one, 7 of 27,914 do. Scoring it would have marked down more than a third of the database for a switch in their own settings rather than for anything happening in the clan. The 15 points it was going to carry went to roster activity and donations instead.

If your clan has not been measured yet

Roster activity needs us to have watched a clan over time, and we only started recording it on 7 September. Today 27,800 clans of 77,148 have enough history to measure, which is 36% of them.

A clan we have not measured yet is not scored as dead. It is scored on the parts we can see, rescaled to 100. That is the only fair way to handle a gap that is ours rather than yours, and it has one side effect worth saying plainly: an unmeasured clan with strong donations can currently show a very high number, including 1,090 clans sitting at exactly 100 right now. As their history fills in, those scores will settle, and some will fall a long way.

So expect scores across the site to keep moving over the next few weeks rather than freezing after today. That is coverage arriving. The formula is not changing again.

Your score history has not been rewritten

We said we would mark the change rather than erase what came before, and that is what happened. Every score recorded up to and including today is tagged as the old formula. Everything recorded from tomorrow is tagged as the new one.

Your clan's trend line will show a step at this date. The step is us, not you.

What you need to do

Nothing. No setting, no form, no re-verification. The score maintains itself.

If you are recruiting, the one thing worth doing is making sure your clan is listed as recruiting. The score now rewards the exact thing a recruit is trying to work out before they join, which is whether anybody is still there.