A fork of the game NetHack (http://nethack.org), focusing on interface improvements and few changes to gameplay — http://patch-tag.com/r/ais523/acehack/wiki/
Prevent putting rolling boulder trap on lava
Found by aaxelb, located by paxed, fixed by bhaak, ported by kerio.
Use flock(2) to lock files, rather than the more awkward link(2), when available
AceHack bugfix: unihorn is an object type, not an object class
Pacifist balance: wounded pets don't hit well, and are hard to hit