I have twice participated in the Ludum Dare game jam, making a game in 72 hours using Stephen Lavelle's Puzzle Script tool, and John Nesky's BeepBox tool.
My game for Ludum Dare 28 (Theme: You Only Get One) is The Initiate's Spell. You can play it here.
My game for Ludum Dare 30 (Theme: Connected Worlds) is Gifts of the Forest. You can play it here.