| r/scifi | Science Fiction, or Speculative Fiction if you prefer. Fantasy too. Asimov, Bradbury, Clarke, Dick, Heinlein and other SF books. SF movies and TV shows. Fantasy stuff like Tolkien and Game of Thrones. Laser guns, space ships, and time travel. etc. Star Trek, Battlestar, Star Wars, etc. | 4,506,441 | 2008-01-25 |
| r/design | Design | 4,466,615 | 2008-01-25 |
| r/learnprogramming | A subreddit for all questions related to programming in any programming language (Contributions are only allowed in English!). | 4,425,090 | 2009-09-24 |
| r/expectationvsreality | Expectation vs. Reality images
Rules
1. No politics
No politics allowed
2. No NSFW
No NSFW allowed
3. Spam
No spam allowed.
4. Does not fit the subreddit
Posts must be on-topic and appropriate for this subreddit.
5. No rude, offensive, or hateful comments
Please be respectful towards other Redditors. This includes - no homophobia, transphobia, fatphobia, racism, sexism, etc. | 4,412,670 | 2011-12-07 |
| r/maliciouscompliance | People conforming to the letter, but not the spirit, of a request. | 4,404,272 | 2016-01-04 |
| r/motorcycles | Braaaap | 4,402,518 | 2008-05-27 |
| r/hardware | r/hardware is a place for quality computer hardware news, reviews, and intelligent discussion.
r/hardware IS NOT the place to come for help of any kind. | 4,374,189 | 2008-01-25 |
| r/canada | Welcome to Canada’s subreddit! This is the place to engage on all things Canada. Nous parlons en anglais et en français. Please be respectful of each other when posting, and note that users new to the subreddit might experience posting limitations until they become more active and longer members of the community. Do not hesitate to message the mods if you experience any issues! | 4,336,306 | 2008-01-25 |
| r/spaceporn | SpacePorn is a subreddit devoted to beautiful space images 🚀🌌. As long as the focus of the image is related to space in some way, it is allowed.
This includes photographs, composites, photoshops, simulation renders, artist's depictions, and artwork. | 4,324,481 | 2011-01-09 |
| r/woahdude | The best links to click while you're stoned!
Psychedelic, mindfucking, mesmerizing, reality-distorting or trippy games, video, audio & images that make a sober person feel stoned, or stoned person trip harder!
Come for mindfucks and self-inflicted gaslighting. Or the hypnotic or mesmerising. Vivid colors, intense patterns. Mind-blowing science and philosophy. Chill or trippy music. Surrealism, absurdism and strangeness.
Reminder: This is not a "reaction subreddit". | 4,322,627 | 2009-10-04 |
| r/nonononoyes | A sub for things that seem to go so brilliantly wrong, but oh so right. | 4,318,546 | 2013-06-27 |
| r/dnd | A subreddit dedicated to the various iterations of Dungeons & Dragons, from its First Edition roots to its Billionth Edition future. | 4,311,443 | 2009-10-10 |
| r/marvelmemes | Welcome to r/marvelmemes: The home of Marvel memes on Reddit! | 4,296,959 | 2014-12-31 |
| r/running | All runners welcome. | 4,274,252 | 2008-08-26 |
| r/productivity | Tips and tricks for being more productive! | 4,263,510 | 2008-01-25 |
| r/animemes | Everyday until I can’t take it anymore. | 4,242,420 | 2013-01-28 |
| r/ufos | A community for discussion related to Unidentified Flying Objects. Share your sightings, experiences, news, and investigations. We aim to elevate good research while maintaining healthy skepticism. | 4,238,008 | 2008-03-11 |
| r/changemyview | A place for people to post an opinion they accept may be flawed, in an effort to understand other perspectives on the issue. Enter with a mindset for conversation, not debate. | 4,228,284 | 2013-01-16 |
| r/loseit | A place for people of all sizes to discuss healthy and sustainable methods of weight loss. Whether you need to lose 2 lbs or 400 lbs, you are welcome here! | 4,216,782 | 2010-07-29 |
| r/roadtrip | /r/roadtrip is your source for everything road trip related. Whether you enjoy traveling by motorcycle, car, or recreational vehicle this is your destination for everything related to road trips! | 4,212,014 | 2009-08-05 |
| r/nails | r/Nails: A place to show off your beautiful nails | 4,201,307 | 2008-05-03 |
| r/moviedetails | Details in Movies, Movie Details! | 4,173,424 | 2017-06-30 |
| r/thriftstorehauls | A forum dedicated to sharing your thrift finds. Garage sales, flea markets, pawn shops, and more are all allowed. Come join our community and share your passion for the hunt with like-minded people! | 4,154,600 | 2011-08-05 |
| r/mypeopleneedme | I MUST GO. | 4,150,524 | 2013-07-30 |
| r/stockmarket | Welcome to /r/StockMarket! Our objective is to provide short and mid term trade ideas, market analysis & commentary for active traders and investors. Posts about equities, options, forex, futures, analyst upgrades & downgrades, technical and fundamental analysis, and the stock market in general are all welcome. | 4,132,027 | 2008-07-09 |
| r/comicbooks | A reddit for fans of comic books, graphic novels, and digital comics. | 4,130,885 | 2008-03-28 |
| r/sipstea | Delivering the internet's best content daily. On Wednesdays we post frogs! | 4,075,361 | 2022-02-07 |
| r/idiotsincars | When idiots get behind the wheel of a vehicle, shit gets funny. | 4,065,555 | 2015-10-27 |
| r/bestofredditorupdates | **What happened to people who ask reddit for advice or help?**
Did they take Reddit's advice? How did it turn out? Read the best updates by redditors and find out what happened after their original post. | 4,047,653 | 2020-01-31 |
| r/buyitforlife | For practical, durable and quality made products that are made to last.
**Reminder:** Please use the search function before making a request.
The Mission Statement: http://www.reddit.com/r/BuyItForLife/comments/jtjuz/bi4l_mission_statement_rules_etc/ | 4,040,472 | 2011-08-25 |
| r/pcgaming | Reddit's #1 source for PC gaming news and discussion. | 4,028,393 | 2008-03-13 |
| r/singularity | Everything pertaining to the technological singularity and related topics, e.g. AI, human enhancement, etc. | 4,015,799 | 2008-01-28 |
| r/compsci | Computer Science Theory and Application. We share and discuss any content that computer scientists find interesting. People from all walks of life welcome, including hackers, hobbyists, professionals, and academics. | 3,996,894 | 2008-03-24 |
| r/gameofthrones | Game of Thrones | 3,984,956 | 2010-03-02 |
| r/math | This subreddit is for discussion of mathematics. All posts and comments should be directly related to mathematics, including topics related to the practice, profession and community of mathematics. | 3,976,976 | 2008-01-24 |
| r/fantasy | r/Fantasy is the internet's largest discussion forum for the greater Speculative Fiction genre. Fans of fantasy, science fiction, horror, alt history, and more can all find a home with us. We welcome respectful dialogue related to speculative fiction in literature, games, film, and the wider world. We ask all users help us create a welcoming environment by reporting posts/comments that do not follow the subreddit rules. | 3,960,997 | 2008-07-29 |
| r/keto | The Ketogenic Diet is a low carbohydrate method of eating. /r/keto is place to share thoughts, ideas, benefits, and experiences around eating within a Ketogenic lifestyle.
Helping people with diabetes, epilepsy, autoimmune disorders, acid reflux, inflammation, hormonal imbalances, and a number of other issues, every day. | 3,960,598 | 2010-05-27 |
| r/maybemaybemaybe | For those videos that make you think maybe... | 3,945,832 | 2015-05-27 |
| r/xboxone | Community is restricted, please post to r/Xbox! See stickies for details! | 3,925,592 | 2013-05-21 |
| r/genshin_impact | This is the official community for Genshin Impact (原神), the latest open-world action RPG from HoYoverse. The game features a massive, gorgeous map, an elaborate elemental combat system, engaging storyline & characters, co-op game mode, soothing soundtrack, and much more for you to explore! | 3,922,174 | 2019-06-07 |
| r/podcasts | r/podcasts: a subreddit to discover, discuss, and review podcasts with other podcast enthusiasts. As part of this mission, r/podcasts is curated to promote respectful and on-topic discussions. This is not a place to promote your podcast. | 3,919,936 | 2008-01-25 |
| r/diwhy | Ever try fixing things on your own? Didn't come out the way they were supposed to? Do you stand there questioning your whole life? If so, post your results here to DiWHY (Pronounced: Dee Eye WHY). Where shitty projects from DIY live prosperously.
If at any time you feel that a specific post isn't living up to the sub (be gentle as this is a humor sub, not meant to be taken seriously), please feel free to report (give exact reason) and let your voice be heard with downvotes and comments. | 3,896,997 | 2013-11-20 |
| r/kpop | K-Pop (Korean popular music) is a musical genre consisting of pop, dance, electropop, hiphop, rock, R&B, and electronic music originating in South Korea. In addition to music, K-Pop has grown into a popular subculture, resulting in widespread interest in the fashion and style of Korean idol groups and singers. | 3,896,653 | 2009-07-05 |
| r/comics | Everything related to print comics (comic books, graphic novels, and strips) and web comics. Artists are encouraged to post their own work. News and media for adaptations based on comic books are welcome. Read [the subreddit wiki](https://www.reddit.com/r/comics/wiki/index) for more information about the subreddit. | 3,890,339 | 2008-01-25 |
| r/chemistry | A community for chemists and those who love chemistry | 3,887,437 | 2008-03-13 |
| r/reactiongifs | Give a man a gif and he will meme all day, teach a man to REACT and he will be as a GOD | 3,868,761 | 2011-11-30 |
| r/harrypotter | Welcome to r/HarryPotter, the place where fans from around the world can meet and discuss everything in the Harry Potter universe! Be sorted, earn house points, debate which actor portrayed Dumbledore the best and finally get some closure for your Post-Potter Depression. | 3,843,815 | 2008-06-12 |
| r/wearethemusicmakers | WATMM is a place for music makers to discuss the active process of making music. | 3,842,069 | 2008-09-09 |
| r/taylorswift | A subreddit for Taylor Swift | 3,835,521 | 2010-03-22 |
| r/asianbeauty | A place to discuss beauty brands, cosmetics, and skincare from Asia. | 3,825,609 | 2013-01-11 |