r/TrueCrime vs r/UnresolvedMysteries

Side-by-side using public descriptions, members, growth and rule titles from SubMouse. Missing fields show as n/a. Adult communities are excluded.

Swap sides New comparison Related to r/TrueCrime Related to r/UnresolvedMysteries

True crime room vs unresolved mysteries room

r/TrueCrime’s longer public description was n/a in our snapshot; collected rule titles emphasize no personal information or suspect-naming, no glorifying criminals, and limits on memes and sensational titles. r/UnresolvedMysteries likewise had a thin public description in our snapshot; its rules focus on unresolved cases with posting and commenting guidelines and a bar on very recent murders/disappearances.

In our directory, UnresolvedMysteries is larger (about 4.5M, rank #206) than TrueCrime (about 3.4M, rank #307). Activity samples show UnresolvedMysteries posting more often (~9 posts/day vs ~4). TrueCrime’s sample mixes text with some images/video; UnresolvedMysteries’ sample is essentially all text with flairs such as update, disappearance, other crime, request and John/Jane Doe.

Rule titles underline the split: TrueCrime bans personal info/stories/suspect hints, glorifying violence, advertising and memes; UnresolvedMysteries requires staying on topic, blocks undocumented personal anecdotes as “mysteries,” and restricts cases from the past six months.

Choose r/TrueCrime for true-crime discussion under its no-doxxing and no-glorification rules.
Choose r/UnresolvedMysteries for open cases and unexplained events under its unresolved-case and recency rules.
Both sit outside the current Top 100 cut; neither is a place to investigate private individuals.

Written comparison based on public descriptions and rule titles · updated 2026-11-07.

r/TrueCrime

No public description in our directory.

Members: 3.4M
7-day growth: n/a
Posts/day: 4.1
Directory rank: #307
Created: n/a
Submissions: Text or links

Sample mix: text posts 49%, images 26%, videos 15%

Topics: True Crime

Rule titles (short names we collected)

No personal information, personal stories, or indicating suspects.
Don't Glorify Criminals or Violence
No advertising
Respect other users
No memes
No dehumanizing speech or frontier justice
No video posts / self promotion
Text posts guidelines
Rule 9 - No sensationalist titles
Rule 10 - Off-topic/moralizing/misogyny/sexism/racism
Rule 11 - No missing persons posts

Open r/TrueCrime on SubMouse

r/UnresolvedMysteries

No public description in our directory.

Members: 4.5M
7-day growth: n/a
Posts/day: 9.4
Directory rank: #206
Created: n/a
Submissions: Text posts

Sample mix: text posts 100%

Topics: Paranormal

Rule titles (short names we collected)

Stay on topic
Posting Guidelines
Commenting Guidelines
Name: No murder/disappearances from the past 6 months
Undocumented / personal / anecdotal "mysteries" are not allowed
User involvement in cases
Personal Information & Witchhunting
Updates, Meta-Threads and Reposts
Site-wide Rules and Reddiquette
Moderator's Discretion and how you can help us
No advertising.
Don't accuse persons cleared by LE or not officially named as suspects.

Open r/UnresolvedMysteries on SubMouse

Supported differences

Aspect	r/TrueCrime	r/UnresolvedMysteries
Size r/UnresolvedMysteries is larger in our directory.	3.4M members	4.5M members
Posting activity (our sample)	4.1/day	9.4/day
Common post types in our sample	text posts 49%, images 26%, videos 15%	text posts 100%
Allowed submission type (meta)	Text or links	Text posts
Topic tags on SubMouse	True Crime	Paranormal
Selected rule titles (short names we collected)	No personal information, personal stories, or indicating suspects.; Don't Glorify Criminals or Violence; No advertising; Respect other users; No memes	Stay on topic; Posting Guidelines; Commenting Guidelines; Name: No murder/disappearances from the past 6 months; Undocumented / personal / anecdotal "mysteries" are not allowed

Rules and posting patterns we can verify

TrueCrime short titles include: no personal information, personal stories, or indicating suspects; don’t glorify criminals or violence; no advertising; respect other users; no memes; no dehumanizing speech or frontier justice; no video posts / self promotion; text posts guidelines; no sensationalist titles; off-topic/moralizing limits. Our sample mixes text with some images and video.

UnresolvedMysteries: stay on topic; posting guidelines; commenting guidelines; no murder/disappearances from the past 6 months; undocumented/personal/anecdotal “mysteries” not allowed; user involvement in cases; personal information and witchhunting; updates/meta/reposts. Our sample is text-forward with disappearance, update and Doe-style flairs.

Where this comparison comes from

Member counts from SubMouse’s safe-for-work directory (public descriptions were thin in our snapshot). Short rule titles and activity samples SubMouse collected. Short titles only.

Members and public descriptions come from SubMouse's safe-for-work directory (as of 2026-11-02 UTC); 7-day growth measured from 2026-10-26. Posts/day and post-type mixes appear when we have an activity sample. Rule lines are short titles, not the full sidebar. Directory rank is listing order — communities outside the current Top 100 open in the info tool instead of a full community page.