Prior to 3.1.x the dat subdirectory didn't exist yet but data.base was present somewhere, possibly in the src subdirectory instead. I don't know whether it goes as far back as hack 1.x or even nethack 2.x. The source code for a bunch of old versions is present at https://nethackwiki.com/ but I'm not sure whether the data files are all there too. The source code for the most recent released version (3.6.7) is... Source: about 1 year ago

I am not sure what extra benefits the Steam version has, but the game is available for free either as download on nethack.org, or to play online at something like alt.org/nethack or hardfought.org. Source: about 1 year ago

You don't even need two people to play D&D, Nethack is great! Source: about 1 year ago

I've always been fond of the last quote on nethack.org. Source: about 1 year ago

It was discussed here last fall, when the home page for nethack.org was updated to mention it. The blurb includes a few other tiny screen shots and says the exhibit is scheduled to be open until mid-July. Source: over 1 year ago

You should check out https://lightform.com/. Source: over 2 years ago

The one used in the example above is relatively inexpensive: https://lightform.com/. Source: almost 3 years ago

Https://lightform.com it's scans the environment and allows you to to create a projection using its own software, they're quite affordable too. Source: almost 3 years ago

Hey op check out the lightform projection setup. I could get super creative with all your little intricacies! Source: almost 3 years ago

And Lightform can be found here Https://lightform.com. Source: about 3 years ago