Project Maternity was a 2010 Imagine Cup entry from Ninja Vikings with Claws’ (Dominic Bodman, Catarina Barros, and myself). It made it to the second round of the competition — not bad for first year students that had only a few weeks in which to develop it from scratch.
Harmonia
Harmonia was designed to be an asynchronous co-operative game for the Xbox 360 in which an experienced videogame player could support a less experienced player who was at the center of the gameplay experience.
Pseudo 2D Convex Hull Generation
While working with the separating axis theorem in a 2D XNA project, I started looking at ways to generate a tight-fitting convex hull around a sprite in order to implement more accurate collision detection than I would be able to with a standard bounding box.
Drawing 2D Primitives with XNA
As described on MSDN, drawing lines and other 3D Primitives with XNA involves defining vertices in world space, setting up an Effect, applying view and projection transformations, and finally making a call to the graphics card with a DrawUserPrimitives (or similar) call.
Using Blender Models In XNA
The following is based on Part I of Stromcode’s excellent Modelling for XNA with Blender series, which details how to create a basic UV textured 3D model in Blender and export it as an .fbx file for use in XNA.