When comparing Killer Cavern vs Nethack, the Slant community recommends Nethack for most people. In the question“What are the best roguelikes on Android?” Nethack is ranked 17th while Killer Cavern is ranked 56th. The most important reason people chose Nethack is:
The gameplay is very deep due to the amount of skills and systems present in the game.
Specs
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Pros
Pro Real-time
The gameplay is in real time, not turn based, so is a bit more like The Binding of Isaac or other roguelites.
Pro Free while in development
In order to test the development of the game the dev has made the game free while it is in development.
Pro Depth
The gameplay is very deep due to the amount of skills and systems present in the game.
Pro Potential for enormous skill growth
Nethack is a game that you can play for hundreds of hours and still not master. But you'll have tons of fun attempting to master it.
Pro Over two decades of constant development
Nethack was first released in 1987. The latest version, 3.6.0, came out in December 2015.
Pro ASCII and tiles available
Nethack is able to run on simple ASCII graphics or use graphic tiles instead.
Cons
Con Short
It has been reported that the game can be beaten in under 5 minutes, so a bit short for those looking for something a to dig into for an extended period of time.
Con Burden of knowledge
There's simply too much information that the game expects you to know before you can properly take advantage of the systems in the game.
Con Feature creep
NetHack has an overwhelming amount of features mostly because the development team found them cool at the time, but with little thought of their greater impact. For example, a Nethack staple is Sokoban as a built-in minigame, which feels out of place in a dungeon crawler.
The extremely large amount of items and abilities break the game's balance and coherence.
Con Outdated controls
You need to study a wiki just to learn the most basic controls. The game is broken in this regard.
Con ASCII Art
Con Run of the mill story
The story of the game is pretty generic fantasy fare. It features orcs, elves, and trolls in an effort for the hero to save the world. While it does not detract from the gameplay, it does seem very familiar to those interested in the genre.