Very few, and I mean VERY FEW games have or even need walkthroughs. The games I can think of off the top of my head are Kiel_Farren's A Game of Life and Death and The Other World, my story (which only had a walkthrough to one ending), and I think Briar_Rose's Tower of Riddles. I don't know of any others.
And maybe it'd help if you gave us the name of the game so we can find the walkthrough?