I'm currently in a clan and I'm thinking of leaving it because I'm unable to be active. If I leave the said clan, what features of the game will I be missing?
Clash of Clans – Importance of Joining a Clan
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Related Solutions
The only requirement is that a clan must have at least 5 members eligible for war. (This used to be 10, but 5 vs 5 war size is also available now.)
Members who are new to your clan will be ineligible for war if they left their previous clan while a war was in progress. They will become eligible for war again when the previous war is completed. You can check your clan member list to see if any members are ineligible for war, and see when they will be eligible again. If you start the clan war while members are still ineligible, those members will not be able to participate.
You can see when players will be eligible in their profile through clan's chat room.
According to the Clash of Clans Wikia:
The clan ranking is based on the number of trophies of its members. This value is weighted according to the following table.
For reference, here is the weighting used:
1-10 50%
11-20 25%
21-30 12%
31-40 10%
41-50 3%
So it is calculated by the amount of trophies in a weighted system instead of a simple total.
Best Answer
Not being in a clan significantly limits what you can do in the game as the game is mainly based around you being in a clan, hence the name. Without a clan:
You will not be able to receive troop or spell donations to fill your clan castle which increases your attacking strength nor will you be able to donate spells or troops which give you experience (which isn't very important) and achievements (which reward you with gems).
You will not be able to take part of clan wars which have good loot (gold, elixir, dark elixir) rewards if you and your clan do well.
However, that being said you can still farm and collect resources and upgrade your base without being in a clan, it just will take longer as your don't have the extra resources from being in a clan.