What happened to version 4? Looks like last release was 3.6.7.

Possibly to avoid conflicts with Nethack4[0], which was a fork of the Nethack 3.x series back when development was stalled. I think the guy behind it later joined the main Nethack dev team.

[0] http://nethack4.org/

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rsaarelm 9 hours ago | parent | prev [-]

There is a variant named NetHack 4, they might want to avoid confusion with it.

	▲	bombcar 9 hours ago \| parent [-]
		Nethack 3.11 for Workgroups was right there ;)