This is intended as more a general discussion and to talk about aspects of game design and what people like, and stuff.
Simulation, Gameplay and Narrative are often used in discussions or tabletop RPs, where most of my experience comes from, so I see Cata through a lot of these eyes. It ticks all three boxes for me, so to speak.
As a summary of terms
Simulation - how the game simulates a hypothetical event, in this case, a zombie good infected post apocalypse.
I’d say Cata does this excellently, and is part of the appeal. Having to worry about clean water and shelter is fantastic, and I think a lot of the fun for a lot of players comes into this aspect.
Gameplay - How fun the game actually is. The interface I think is the main factor in this, as the general idea of “kill zombies etc” is well established as fun. Somewhat this is the difficulty, and having brutal randomish difficulty with permanent consequences really seems part of this, as well as roguelikes in general.
Cata seems to do this well and is getting better, the interface seems to be changing a lot lately. The size of the map and game window seem to be the main limiters here.
Narrative - How awesome the story is.
Most of the interest of the story is in each of my characters personal stories. Reading the lab notes was pretty interesting and I’d like to see more, but I think the main character is yourself, so overall the most interest a player will have in the story will be their characters personal stories. The horrid deaths by survivors make for excellent stories, so I think the way the game allows you to essentially build your own is gonna be top notch.
tl;dr add more gameplay/interface betteryness then amp up realism based difficulty.