fNetHack is a NetHack fork, based on nethack.alt.org's version of the game (which is just NetHack 3.4.3 with a bunch of interface patches). It aims to still feel and play like vanilla NetHack, but removes or rebalances certain elements of the game to make it more interesting and less tedious.

If you're used to regular old NetHack, certain changes might be surprising to you: most notably, Elbereth is gone, making tactical combat and running away much more important than it once was; to make up for it, player characters are a bit more robust, and regenerate health more quickly. Many other items, enemies, or mechanics have been changed or removed to accomodate this change. The endgame is much shorter, and the XL cap is at 15 instead of 30.

A more elaborate list of changes will follow; for now, you should look at the commits page.

If you have any comments, questions, or other feedback, you can connect to on irc.freenode.org and talk about the game in ##fnethack (I'm mauris there.)

Good luck!