This would be very sad because Atari NetHack version was the very first one with a GUI, and its tile-set was actually adapted by upstream NetHack.
Btw. Atari GUI was written by Warwick Allison (using his own C++ GEM toolkit), who's part of current NetHack DevTeam:https://nethackwiki.com/wiki/DevTeam
(I remember him working at some point for TrollTech, which developed the cross-platforms Qt C++ GUI toolkit. TrollTech was later bought by Nokia and then sold to Digia. I don't know what Warwick does nowadays, but I guess it doesn't anymore involve Ataris.