The gameplay and design questions are still not decided, but that does not have to stop us from collecting a first round of graphics. We probably will have do discard or replace some of them later, but we will have to discard or rewrite a lot of scripts and engine source code, too, so that's no excuse ;-)

The goal is to get to a playable game as fast as possible, because matthes wants openclonk to at least be visually different from CR from the outset, and because it is always easier to judge things in a working context.

So what do we need? At least a Clonk and a rock, a sky, some material textures, some replacements for stuff in the Graphics.c4g. OpenClonk will be able to zoom, so it would be good to have this stuff in larger resolutions available. Randrian already made a clonk and I think he'll let us have it, so that's one point of the list. Graphics for more objects are also welcome, of course, but we will always be able to add more later. These graphics do not have to be perfect, but a good first impression will help us attract more contributors and they'll show up on historical screenshots ;-)

Now the unavoidable legal part: This is an open source project, so you have to give everyone in the world permission to alter and redistribute your graphics, and be legally able to do so, which means in practice that the graphics have to be made by you. This means that somebody could use your graphic in ways you don't like, so you have to be okay with that! To do this, state in your post that you license your work under the ISC license, the CC-by or the CC-by-sa license, or some other free license of your choice. (But please consider one of the first three, is-this-license-fee-enough discussions are mindnumbing.) Later we'll probably require that every graphic has the same license, so you get to influence which one it'll be now.