Hey guys! I love the Ludum dare, even though it's only my second time participating. This time around, I decided to make a Ludum Dare game that featured Rubber Ducky. If you want to check it out, troddle on over to here:
http://ludumdare.com/compo/ludum-dare-34/?action=preview&uid=24036
Edit: Due to some confusion, lemme' just wrap something up:
Rubber Ducky and the Trial of Clams was made for the Ludum dare, but Rubber Ducky and the Rainbow Gun (which you are looking at right now) was not. :)