Oca is a Brazilian game studio dedicated to free culture. They design and publish board, card and electronic games, which are all released under public domain. They exclusively use free software for game development and endorse Gnu/Linux platform.
To foster availability of public domain games, Oca has created a set of foldable patterns for game parts, such as pins, dice and boxes. This print and play style, which they call 'bronze games' is designed to save paper and ink, to be foldable and assembled without glue and to include a folding box where game components can be kept safe for future use.
All of Oca's board and card games possess bronze versions for free download, and some also have commercial versions, called 'gold versions'. The studio also maintains a bronze Classics Collection which includes traditional games from around the world, some common such as chess and poker but also some unusual, such as patolli and luzhanqi.
Finally, the Studio has released a PC game related to one of their board games, 'Glamour' but, while they share the theme, they are actually different games (the PC version is a sidescroller). Another PC game was later announced, called 'Bobots', which does not have a corresponding tabletop game.
The company claims to follow 6 rules when designing games: simple is better than complicated; complex is better than simplistic; libre is better than free; aesthetics is part of the fun; free is different from shabby; and fun is better than educational.
Information retrieved from the company's website (www.ocastudios.com) and facebook page (www.facebook.com/OcaStudios).