I had endless fun playing it back when it was released in 2013.
Here's 5 hours of gameplay to give you a flavor of the game.
https://github.com/flibitijibibo/RogueLegacy1/
FWIW, I was thinking this was the text game rogue(6) :) It is another game
"Genealogical"? Also strange. What's that mean, really?
PSA: Nethack is still F/OSS, still famous, and still under active development, at version 3.6.7.
https://nethack.org/common/license.html
Download it complete, free, and ready-to-play: https://nethack.org/v367/downloads.html
Or, why install it, when you can create an account on NAO, and play it competitively online! https://alt.org/nethack/
Maybe play the game?
hint: extremely well