We are trying hard along with 3DFX programmers to find the cause for this mess. I think that we will be able to fix it soon. Regarding lower-end cards, we will support speed customization, so majority of gamers will be able to run Serious Sam with acceptable performance. We would like to build a strong mod community. Tools will defiantly include both of our editors, Serious Modeler and Serious Editor.
First application is used for compiling models, second one for creating levels.
Official demo that will feature completely will be out by the time game itself is finished. Please notice that these plans could change due to publisher's intervention. For now it seems like Sam will be out early next year, but I must point out that it mainly depends upon publisher.