"Don't let the name fool you: The Unnamed Angband has no shortage of distinct flavour that sets it apart from any other variant. You adventure in Tolkien's world, through towns and wilderness and multiple dungeons, journeying from Bree towards greater and greater danger.Welcome to Unangband, my variant of Angband. Angband has a long history of development: I recommend you check out the excellent resources at angband.oook.cz and the wikipedia entry on Angband if you are interested in the history and current state of the play for this game.
This variant roughly doubles the monster list, expands the class-based system of Angband with numerous possible specialties that let you fashion a unique character, offers a positively absurd variety of terrain (cages that trap you, floor chests that can store objects, burnable woods, chasms, bloodstains), and includes a bunch of major interface improvements, including better presentation of graphics and an experimental isometric view." - From angband.oook.cz.
I highly recommend you download the latest version of Unangband and start playing. Don't forget to upload your character dumps to the Angband Ladder at angband.oook.cz and get bragging...
If you are interested in the development side of Angband, check out the links under the resources section to the right, including my development blog, which is updated regularly. The only thing updated more frequently is the SVN source code repository hosted at the development page, and you can browse that for tid bits on what will be in the next Unangband release. Of particular interest to you will be the change log and todo list that are maintained in the repository.