Loom is a simple, satisfying game with an intriguing story, but it doesn't have enough length to keep you hooked.
You play as Bobbin' Threadbare, a 17 year old member of a guild of weavers who can barely weave to save his life. You live near the end of the Age of the Great Guilds in the year 8021 AD. Right off the bat the game asks the player questions as to why the year is 8021 AD, why there are specific guilds, and why the planet is like the way it is. These questions are never answered, which makes the story a bit more interesting.
The gameplay is story-driven and very linear. Once you acquire your mage's distaff, the interface is a very simple point-and-click style. In the game you learn different spells (called "drafts") which you use at different points in the game. You'll only use a few spells more than once, and, assuming you know what spell to use (which you will once you get the hang of things), the game is very simple and linear. The main flaw is that it's very, very short. It takes a person who knows what to do two hours to beat it.
The graphics are simple and plain for its time, but they look like what they signify. The sheep look like sheep, and dragons look like dragons.
The sound is superb. The voice acting is excellent, and the music and sound is outstanding.
The gist of the story is basically a fleshed-out version of the typical "young boy who can't do anything saves the universe" plot, but it does leave some unanswered questions in the end, and the way the story is weaved together is interesting. The game gives plenty of hints as to what's going to happen next, but they are given out as simple allusions and foreshadowing rather than blatant "this is going to happen" events.
Overall, the game is simple and fun while it lasts. If you don't have much time to spare and are looking for a simple little adventure, Loom will keep you distracted.