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r/Cosmere PUBLIC
A community for Cosmere books by Brandon Sanderson.
189,567 members
Created: Dec 2011
Language: EN
POSITIVE SENTIMENT
Last analyzed: Jul 13, 2026 06:01
Marketing Summary
r/Cosmere is a PUBLIC community on Reddit with over 189,567 members. It currently has a positive sentiment with an engagement rate of 1.2%. With a community friendliness score of 80, this subreddit presents a moderate conversion potential for authentic brand participation. Self-promotion is generally allowed according to recent analysis.
80
Friendliness Score
1.2%
Engagement Rate
62
Conversion Potential
2.0%
Monthly Growth
Marketing Analytics
44.4
Avg Post Score
22.9
Avg Comments
25
Brand Mentions
0
Posts/Hour
Top Post Types
text
100.0% (50)
Peak Activity Hours
Times shown in UTC (Coordinated Universal Time)
Local times are automatically converted based on your browser's timezone
2PM UTC
High
~35 active
12AM UTC
Medium
~20 active
6AM UTC
Low
~10 active
Community Culture
Community Sentiment
POSITIVE
1.1K
Avg User Karma of Top Posts
70%
Commercial Acceptance
Content Preferences
Moderation Patterns
Rules & Compliance
18
Total Rules
Posting Requirements & Restrictions
No limit
Minimum Karma
No limit
Min Account Age (days)
ANY
Submission Type
Enabled
Flair System
Subreddit Rules
- Show respect to others.: Every interaction on the subreddit must be kind, respectful, and welcoming
- person should ever feel threatened, harassed, or unwelcome. Do not engage in hate speech, bigotry, harassment, insults, personal attacks, trolling, or arguing in bad faith—including baiting or escalating disagreements into personal insults.
- This all extends to meta discussions on the value of another person's post.
- Interpretation of this rule is subject to the moderators' discretion.
- Spoilers not permitted in post titles.: Post titles and thumbnails must never reveal spoilers. See the [spoiler policy](/r/Cosmere/wiki/spoilers) for more details. Title wording should be obscured if necessary. Spoiler markup will not work when included in the title. Use Reddit's spoiler functionality to obscure spoilery thumbnails. Grey areas are up to the moderators' discretion.
- Use spoiler markup when necessary.: Spoilers outside the scope of a post must be hidden with spoiler markup. See the [spoiler tag guide](/r/cosmere/wiki/spoilers) or the sidebar for help.
- Posts must be flaired for spoilers.: All post titles must be flaired to indicate the level of expected spoilers in the link and/or comments. See the [spoiler tag guide](/r/Cosmere/wiki/spoilers) for a full list of acceptable tags and their proper usage.
- Note that new releases may also have additional requirements regarding spoiler tags. See pinned announcements for details.
- No excessive reposting/crossposting.: Identical or very similar content may not be reposted within (by default) a two week period, either by the same user or by multiple community members. Original non-AI art can be posted to two subreddits. This period may be adjusted at the moderators' discretion.
- NOTE:** This rule applies to crossposting across r/BrandonSanderson, r/Cosmere, r/Stormlight_Archive, and r/Mistborn. Content may not be posted across more than one of these subreddits without moderator approval.
- Posts must be on topic.: Posts must be related to the Cosmere. Posts relating to sensitive topics will be subject to greater scrutiny. Self-promotion is permitted if the post is relevant and the user is involved in the community. Meta discussions related to the subreddit are generally permitted.
- Respect intellectual property, and attribute art/content.: Piracy and copyright infringement are strictly forbidden. With some exceptions, all content must comply with [Dragonsteel's licensing and fanart policies](https://faq.brandonsanderson.com/knowledge-base/can-i-make-fan-art-or-write-fan-fiction/). Artwork must be attributed and may not be posted against the artist's wishes.
- No use of generative AI allowed (exceptions may be made for accessibility under mod discretion). See [post for details](https://www.reddit.com/r/Cosmere/comments/1pofm2m/).
- Leaked content is not permitted.: Content which is released outside of Brandon Sanderson's wishes is not allowed under any circumstances. Pre-release content publicly released by Brandon, Dragonsteel Entertainment, or a publisher is okay if marked appropriately for spoilers.
- Restricted content has additional requirements.: Common and repetitive content such as memes, images reminiscent of something in the books, photos of books/shelves/merch, photos of pets, etc. is not permitted without meeting [additional requirements](https://www.reddit.com/r/cosmere/wiki/rule_9). Exceptions apply on Fridays.
- Retired content is not permitted.: Posts concerning retired content are no longer allowed, at the moderators' discretion, including posts about: basic reading order questions ([see wiki](https://www.reddit.com/r/Cosmere/wiki/order/)), “I got spoiled”, “Do I need to read the whole book”, simple misprints/typos, adaptations/casting, license plate photos.
- [For more details, see this page.](https://www.reddit.com/r/cosmere/wiki/rule_10)
- No sales.: We do not permit offers or advertisements to sell or buy items. Please use r/brandonsanderson to facilitate sales.
- Follow new release rules and other temporary guidelines.: Follow all temporary rules and guidelines that may be in effect. These will typically be announced in a pinned post and often involve new book releases, events, or other unique circumstances.
Marketing Data Updated
Jul 13, 2026
Rules Updated
Jun 28, 2026
Compliance Updated
Jun 28, 2026
What is r/Cosmere?
r/Cosmere is a public Reddit community created in December 2011 with over 189,567 members. A community for Cosmere books by Brandon Sanderson.
The community has a positive sentiment and an engagement rate of 1.2%. With a friendliness score of 80, it is considered very welcoming to new members.
Self-promotion is generally allowed, making it a potential opportunity for authentic brand participation.
Frequently Asked Questions about r/Cosmere
r/Cosmere is a public Reddit community
with 189,567 members.
A community for Cosmere books by Brandon Sanderson.
With a conversion potential of 62
and an engagement rate of 1.2%,
r/Cosmere presents a
moderate
opportunity for authentic brand participation.
Self-promotion is generally allowed, but always follow community guidelines.
r/Cosmere has 18 community rules.
r/Cosmere has an engagement rate of 1.2%
with an average post score of 44.4
and an average of 22.9 comments per post.
The community sentiment is positive
with a friendliness score of 80 out of 10.
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