About r/ksi
In its own words:
Anything related to KSI.
Community guide
r/ksi (#369, about 3.0 million) is for anything related to KSI. Rules ban porn/gore, spam/reposts, upvote begging, off-topic posts, drama/complaint threads, Twitter posts, and stealing creative works; also “no disrespecting Dragon Ball Z.” Image/video-heavy sample (~5.9 ppd).
On-topic KSI content
Creative and meme flairs show up in samples; irrelevant or repetitive circle-jerk topics get removed.
What to avoid
No self-promo spam, no personal info, no low-effort dumps, stay civil—and skip Twitter embeds and drama posts per rules.
SubMouse Editorial
The community was created on May 26, 2013, which makes it 13 years old. Since Oct 26, 2026, it has gained 140 subscribers (+0.01%). It sits just behind r/DeepIntoYouTube (#368) and ahead of r/atheism (#370) in our ranking.
What sets r/ksi apart
Compared with other large communities, r/ksi leans heavily on images (59% of recent posts; the typical Top 100 subreddit sits at 19%). r/ksi is more of a browsing community than a debating one: 2.9 comments per post on average, well under the Top 100 median of 13.6. Relative to its huge audience, posting is calm — around 2.0 new posts a day per million members, which puts it in the quietest fifth of the Top 100. A good post has less competition here.
Subscriber growth
Between Sep 19, 2026 and Nov 2, 2026, r/ksi grew from 2,980,122 to 2,981,075 subscribers (+953, +0.03%). That is about 22 new members per day. The chart uses our weekly snapshots (9 so far), so it gets longer every week.
What r/ksi talks about
Looking at the titles of 29 recent posts (Oct 29–Nov 4), the words that come up most are “bro”, “instagram”, “invicto”, “rainier” and “sidemen”. Other frequent themes are girlfriend, wdym, fell, sitted, reacting and clips. Recurring phrases include “wdym bro” and “bro fell”. By format, 59% are images, 28% are videos and 10% are links.
Popular post flairs: CREATIVE (6), MEME (4).
Activity and best time to post
r/ksi gets about 5.9 new posts a day. The public archive holds 2,213,820 posts and 6,510,178 comments in total, about 2.9 comments per post.
Rules of r/ksi
The moderators of r/ksi list 14 rules. In short:
- Content policy violation
- No self-promotion
- No porn/gore.
- No spamming/reposting
- Do not ask for upvotes or make petitions.
- Irrelevant to ksi
- Personal Information
- Circle Jerks (Repetitive topics)
- Don't steal creative works (artwork,animations,etc etc)
- No Low effort posts
How to join
Open reddit.com/r/ksi and press “Join”. Read the community rules in the sidebar before you post: every subreddit is run by its own volunteer moderators.
Frequently asked questions
How many members does r/ksi have?
r/ksi has 2,981,075 subscribers (Nov 2, 2026), which makes it the #369 safe-for-work subreddit in the SubMouse ranking. It added 953 members between Sep 19, 2026 and Nov 2, 2026.
How old is r/ksi?
r/ksi was created on May 26, 2013, so it has been around for 13 years. The oldest post in the public archive is from Dec 31, 2013.
How active is r/ksi?
Moderately: r/ksi gets about 5.9 new posts a day (average of the last four weeks). Over its lifetime the archive counts 2,213,820 posts and 6,510,178 comments.
What is r/ksi about?
The community describes itself as: “Anything related to KSI.” Recent post titles often mention bro, instagram, invicto, rainier and sidemen. Most posts are images (59%).
Is r/ksi safe for work?
Yes. Reddit does not mark r/ksi as an 18+ (NSFW) community. SubMouse lists safe-for-work subreddits only.
How do I post on r/ksi?
Join the community on Reddit first, then use “Create post”. r/ksi accepts link and media posts (no plain text posts), with images, videos and galleries enabled. It has 14 posted rules, starting with: “Content policy violation”; “No self-promotion”; “No porn/gore.”. Moderators remove posts that break the rules, so read them in the sidebar before posting.
Which communities are like r/ksi?
Communities with similar topics include r/funny (67.6M), r/AmItheAsshole (24.7M), r/oddlyspecific (3.8M), r/rareinsults (3.1M) and r/entitledparents (2M).
Stats from public data (data updated Nov 2, 2026; activity, rules and archive totals via the Arctic Shift archive, Nov 6, 2026). Point and comment counts are archive snapshots and can be lower than on Reddit today. SubMouse is an independent directory and is not affiliated with Reddit or the moderators of r/ksi.