A great example is "A dark room". Another example (although it's a bit too complex for what I'm researching) would be Dwarf fortress.
Any other intriguing games that you can share?
Also, if you were to build such a game from scratch, what languages/platforms would you use? e.g. "A dark room" is open source and uses mostly Javascript [0].
Thanks for any suggestion!
[0]: https://github.com/doublespeakgames/adarkroom
I know Brogue (https://sites.google.com/site/broguegame/). It's similar to Nethack but with a more user-friendly UI. The game has less depth than Nethack but the enemies AIs are supposed to be more developed.
There is also Caves of Qud (http://www.cavesofqud.com/) in this subculture.
There are also old games that are only textual: https://en.wikipedia.org/wiki/Colossal_Cave_Adventure