Libre works can be shared both in original form and after being adapted, though there may be some conditions on their use.
There are a number of different definitions of libre, including the Open Definition and the Definition of Free Cultural Works
No matter what the definition, libre content can be shared and adapted by any person for any purpose, including commercial purposes. The only requirements are minor, and include attribution (you need to give credit to those whose work you're using) and copyleft (if you use the content in your own work, your work has to be under the same licence as the content you use).
Subcategories:
Works
- 100 CC BY Hits ● A hundred libre songs.
- 365 Sketches ● A blog with a new sketch each day.
- 4C System ● A supers retroclone.
- 6d6 RPG ● A universal RPG.
- Abulafia ● A collection of random concept and word generators for story gamers.
- Adventures Of The Space Patrol ● Retro-Cute Sci-Fi Role-Playing
- Alchemy ● An electronic sketching program.
- Alchemy System ● A modified d20 game set in its own universe.
- Animalball Melee ● A simplified d20 System for gladiatorial combat.
- Anima Prime ● A fast-paced RPG inspired by manga and anime.
- Arcemu ● Arcemu is an MMORPG server framework project which currently supports World of Warcraft 3.3.5a
- Army Brats ● "Welcome to Fort Biloxi. Your parents have sent you to military school to "help you focus". What could be scarier than military school? How about being one of the new kids? Luckily, you have a cunning plan. You and the other new kids (the other players) are going to try to get expelled so you can go back to public school with all your friends."
- As The Tea Leaves Grow ● Small Toad – youngest student of Master Iron Willow – gave the rarest tea flower in Master Iron Willow's considerable collection to a passing beauty.
- Astral Dreams ● A space opera miniatures wargame.
- Australian Budget 2012-2013 ● The federal government budget and budget overview for 2012-2013.
- Australian Government Intellectual Property Manual ● Government guidelines for implementing 'open licensing'.
- A World of Fire and Sand ● A freeform game inspired by Dark Sun.
- Backswords & Bucklers ● Fantasy dungeoncrawling in Elizabethan England.
- Bad Habits ● A Fiasco playset about backstabbing nuns.
- Bank Robbery LARP ● A LARP about bank robbery which doesn't quite work.
- Basic Fantasy Role-Playing Game ● A fusion of Basic D&D with D&D 3E to create a simple, light-weight game.
- Beast Hunters ● Tattooed hunters of beasts use their fiendish blood for sorcery.
- Big Buck Bunny ● A whimsical movie where three rodents get their just deserts.
- Bloody Forks ● A LARP about the French and American battles before the War of Independence.
- Boarsdraft ● Wizards at a wizarding school, trying to pass their classes while fighting evil.
- Bounty Hunters, Map Makers & Gold Diggers ● Metaphors for Designing Fair Intellectual Property Laws
- Cap & Trade ● A game to teach people about carbon pricing.
- Cascade Failure ● Life in a post-apocalyptic future.
- Circe ● One of the first games to be open source.
- Composition Generators ● Generates collections of stripes or dots or blank canvases.
- Contagion ● A free wargame.
- Copying Is Not Theft ● A song arguing that copyright violation is not theft.
- CopySouth Dossier ● 'Issues in the economics, politics, and ideology of copyright in the global South'
- Core Elements ● A distillation of the d20 System in just seven pages.
- Creative Commons: A User Guide ● A step-by-step guide to the world of CC licences.
- Credit Is Due ● A song by Nina Paley about attribution.
- Critical!: Go Westerly ● A light and light-hearted RPG.
- Critical Point Of View ● An INC Reader for Wikipedia.
- Cyberpunk Remix ● This game is about your crazy friends and family.
- d20 Anime ● Play magical girls, sorcerers and mecha pilots using everyone's favourite system.
- d20 Modern ● Modern role-playing, from occult investigation to special ops and anything in between.
- d20 Open Mass Combat System ● A free wargame.
- Dangers & Dweomers ● A merger of Swords & Wizardry and Basic Fantasy.
- Danger Squad 2 ● A fantasy RPG designed for quick play and no fuss.
- Dan's Diminutive D20 ● Quick and easy d20 role-playing.
- Dark Dungeons ● A tabletop RPG based on the Rules Cyclopedia.
- Darker Dungeons ● A tabletop RPG based on a streamlined version of the Rules Cyclopedia.
- Dark Passages ● A modern fusion and re-organisation of 0E and 1E rules.
- Data Journalism Handbook ● "[A] free, open source reference book for anyone interested in the emerging field of data journalism."
- Death Takes A Holiday ● When Death takes a holiday, a hapless family of ghosts must shepherd the dearly departed.
Sources
- 1KM1KT ● A host of gratis role-playing games.
- Against Monopoly ● A blog on intellectual property.
- Alderon's Tower ● Chris Gonnerman's website.
- Alfonse Maria Mucha: The Complete Works ● A collection of artworks of the Art Nouveau artist.
- Amagi Games ● A game company which publishes libre tabletop games and supplements.
- Appropedia ● A wiki to share designs of all sorts.
- Artikid ● "[A]n Italian full-time web-developer, part-time illustrator and games geek."
- Australian Electoral Commission ● The government body that supervises and manages elections.
- Australian Government ● The government of the Commonwealth of Australia.
- Berengad Games ● A publisher of story games.
- Bill Brown ● A designer and artist.
- Brad Sucks ● "a one man band with no fans"
- Brent P Newhall ● A NASA web developer and game designer.
- Burningwell ● Public domain images (mostly photographs)
- ccMixter ● ccMixter is a site for Creative Commons remixes. You can listen to the music, but also sample and mash-up it.
- Center For The Study Of The Public Domain ● A center at Duke Law School.
- Chris Sakkas ● A fan of free culture.
- CommentHow.com ● Step-By-Step DIY Tutorials for any of the world's almost 7,000 languages.
- Commonwealth of Learning ● An organisation which encourages the sharing of research, knowledge and technology.
- Communia ● 'The Association’s mission is to educate about, advocate for, offer expertise and research about the public domain in the digital age within society and with policy-makers.'
- Connexions ● An open education repository.
- CopySouth Research Group ● A group of researchers seeking to reveal the negative impact of copyright on the Global South.
- CreationMix ● A website for sharing and selling common content audio, video and images.
- Creative Commons ● A non-profit organisation devoted to increasing the number of works available for all to share and adapt.
- Creative Commons Content Directories ● Links to collections of CC-licensed works.
- CRN Games ● A publisher of fun and eclectic games.
- Crystal Obelisk ● A collection of resources for medieval study and tabletop gaming.
- D101 Games ● A small press RPG company.
- data.gv.at ● Data from the Austrian government.
- dati.camera.it ● Data from the Italian Parliament.
- David Bollier ● "David Bollier is a journalist, activist, and longtime scholar of the commons."
- Delubrum ● The designer's own fonts and links to others.
- Desura ● A Steam-like computer game platform.
- Evil Hat Productions ● A small press RPG company.
- Ficly ● A site of microfiction where you can add sequels and prequels to the writing of others.
- Flickr ● A photo hosting website.
- Freebase ● A repository of structured data.
- Free Software Directory ● Details of almost 7,000 free software projects.
- Goblinoid Games ● A publisher of retro-style tabletop games.
- GoodSemester ● A place to share class notes.
- Google Web Fonts ● 'Hundreds of free, open-source fonts optimized for the web'
- Grand OGL Wiki ● A collection of open game content from other sources.
- Gratis Games ● A provider of free retroclones.
- Greg Christopher ● An author of RPGs.
- Greg London ● A programmer, science fiction author and copyright minimalist.
- Harvard Library Open Metadata ● Metadata from the Harvard Library.
- Hungry Lucy ● A band that blends pop, haunting vocals and other styles.
- iCommons ● "iCommons is a registered UK charity that promotes collaboration among proponents of open education, access to knowledge, free software, open access publishing and free culture communities around the world."
- Incompetech ● Royalty-free music
- Institute of Network Cultures ● An institute which studies media, networks and the Internet.
- Basic Dungeons & Dragons ● The mechanics of original and basic D&D.
- @ccess ● An OKFN project to encourage libre open access.
- CC-PRO ● A rebranding of the CC BY-SA licence to emphasise its value to professionals.
- d20 System ● The roleplaying system which first appeared in Dungeons & Dragons 3E.
- FATE ● A game system based on the mechanic: dice roll + invoked and tagged Aspects.
- Liberated Pixel Cup ● "Liberated Pixel Cup is a two-part competition: make a bunch of awesome free culture licensed artwork, and then program a bunch of free software games that use it."
- The Public Domain Manifesto ● A statement on the value of the public domain.
- Who Needs Access? You Need Access ● An OKFN project to increase open access.






