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: over 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

I might be cheating a little with this one, but I'm a big fan of Magic: the Gathering's various "planes", from the aetherpunk stylings of Kaladesh) to the gothic horror(ish) Innistrad) to the drunken magical frat parties of Strixhaven University and everything in between and beyond. Source: over 1 year ago

{ "id": 0, "name": "Magic: The Gathering", "description": "Magic: The Gathering is a trading card game created by Richard Garfield and originally published in 1993 by Wizards of the Coast. It was the first trading card game created.", "links": { "website": [ "https://magic.wizards.com/en/", "https://en.wikipedia.org/wiki/Wizards_of_the_Coast" ], ... Source: over 1 year ago

The popularity of "Mana" continued to grow, as by 1993, Magic; The Gathering (M: tG) was created. M: tG is a trading card game that continues to be extremely popular today. Mana is a focal point of this game, where players had to harvest it and use it to activate certain cards. Of course, this was a clear homage to Larry Niven's "Magic Goes Away" series. Source: over 1 year ago

After several rejections from various publishers, a serendipitous opportunity was presented to them! Szikszai’s wife stumbled upon the phone number of a popular illustrator Jeremy Crawford, and informed him about the duo. Crawford requested for their portfolio, and the rest is history. Their first work was Magic The Gathering. Source: over 1 year ago

Magic: The Gathering - strategy card and deck building game owned by Hasbro/Wizards of the Coast. There may also be a digital version, but I'm not sure, as I've never played. There's a 40K crossover going on now. Source: almost 2 years ago