I'm glad to hear that you like these contests - I like them as well laugh. Anything is ok as long as it showcases the power of c_move and helps you / others learn more about the lite-C language. As an example, a complex shader demo that uses c_move to move a ball won't get points for the shaders, but for the c_move part of the code. Let's not forget that the users decide the winner by discussing the positives and negatives of the demos; I'm only here to make sure that the prize doesn't go to a less valuable project.