zangband-211c-os2.zip contains Zangband 2.1.1c compiled for OS/2 WARP
using EMX.

This software requires the EMX runtime (emxrt.zip) which may be
downloaded from the usual OS/2 sites including hobbes.nmsu.edu and
leo.org

It has been optimized for a pentium processor, but should also run
on a 386 or 486 system.