Here’s a new release of the DS port of Box2D. Robert Kavaler helped me out a lot on this by porting the changes to the SVN version of the (still work-in-progress) Box2D 2.0 and adding a nice build system. Although this is a patch of an unstable version of Box2D it works very stable. By using the DS’s hardware division and sqrt functions I improved simulation speed. Instead of the patches library, the archive now contains a patch with instructions how to acquire and patch Box2D.