I created 2 games for Ludum Dare 30 & 31 Tinker Maze and Bell Buster both are family friendly games. My daughters are huge fans of these game. The large world wide game jam attracts hobbiest from around the world to create games over a 48 or 72 hour deadline. Both Tinker Maze and Bell Buster were improved on after the competion ended from the feedback I recieved from the people that rated it.