The Witcher 2 developer CD Projekt Red has released its RPG-creation toolkit for users to tinker with.

The REDkit toolset was used to create The Witcher 2 and is now freely available online, currently in an open beta. You can download yourself a copy now from thewitcher.com/redkit.

Players can use the tools to develop their own mods for the game - or alternatively create a new RPG altogether.

CD Projekt has designed REDkit to be used by modders of all skill levels. It includes a powerful array of tools to build terrain, invent quests, design characters and weave non-linear stories.

"For CD Projekt RED, RPGs are all about telling amazing stories. We want to give players the power to tell the same kind of non-linear, branching stories that made The Witcher games so popular," CD Projekt RED boss Adam Badowski said.

"Our fans have helped us for years to make our games the best they can be, and REDkit is part of embracing our community as a partner in game development."

A trailer of REDkit in action lies below.