What is it?

First Age Angband.  It’s a roguelike game, a variant of Oangband, which in turn is a variant of Angband.

Where do I get it?

Right here!  The latest version, FAangband 1.0 is available compiled for Windows, WindowsCE, Macintosh OSX and Nintendo DS or as source code.  The latest source code is at FAangband on Launchpad.

Is there anything like it?

Yes.  Here are some links.

Is that it?

No!  There are big plans for the future of FAangband.  Look at the FA development thread on the Angband forums.