   ryzom, also known as the saga of ryzom, is a massively multiplayer online role-playing game (mmorpg). ryzom is labeled as science-fantasy by the creators due to storyline elements that are typically found in both science fiction and fantasy genres. originally developed by nevrax, the game is now owned and operated by winch gate property, ltd. the game is complex, and it incorporates many realistic effects, including changing weather and seasons. computer controlled entities ('mobs') display complex behaviors, and animals will e.g. graze in herds or hunt in packs. the game play is flexible (often referred to as sandbox), and instead of character classes, it has a unique system for character abilities that allows players to construct custom actions like spells or attacks in detail.  ryzom also contains ryzom ring, a scenario editor that lets players design their own areas that can be uploaded and played on the official server.  nevrax originally distributed the client software, nel, as free software using the gpl,  but in 2010 both client and server software was made available under the agpl, with binaries available for microsoft windows, mac os x and gnu/linux. the artistic work is available under a creative commons license. the game is free-to-play on the official servers, but a paid subscription is required for characters to advance beyond level 125. {{cite web|url=http://forums.ryzom.com/showt
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