The Dragon Diamond is the first of a trilogy of games, and thus far the only one to have been ported to Inform. The story and setting are not the most original, but it's enjoyable enough for all that. The game's best feature are its puzzles, which are quite clever. Some items have several different uses, and many of the puzzles have multiple solutions. I did have guess-the-verb type problems with some of the puzzles, however, and though the author has rated The Dragon Diamond as "Merciful" on the Zarfian forgiveness scale, I also found at least one way to get the game into an unwinnable state. These quibbles aside, I would still recommend The Dragon Diamond as a good game for a beginner, as it is quite short and includes a hint system.