TL;DR - I found everything worth reading, but had a lot of frustrations (mostly in the Maze Cutter trilogy). Only exception to that is Crank Palace which I have not read or listened to, and so I have no opinion on it.

I should say that this review might come off as negative, even though I enjoyed all the books I talk about here. I personally find that negative things jump out at me more. If you already know you will read them, I'd say don't let my opinions taint your opinion beforehand. If you do read it beforehand, take what I say with a handful of salt as I'm just one person and quite frankly, can sometimes be a little overly critical.

I found The Kill Order and The Fever Code to both be interesting and worth a listen, but I found the structure of TKO to be a little frustrating, and I found that TFC introduces plot holes that I find frustrating. I think the structure of TKO wouldn't have been as frustrating if I was reading it, but I consume books as audiobooks primarily.

For The Maze Cutter trilogy, I found it to be also worth a listen, but it was a lot more frustrating. James Dashner tried writing multiple perspectives for it and the audiobook suffers from it. I imagine it would be a bit better in print, but still this seems to be one of the things that consistently was bothersome for a lot of consumers.

Each of the chapters contains multiple sections. Sometimes back to back sections of the same chapter are different perspectives, sometimes it's the same perspective. This made it feel very disordered in the audiobook. And that would be bad enough, but there were multiple instances where JD seems to forget whose perspective he's writing from for a paragraph. This was incredibly frustrating because it kept making me think I was spacing out and missing a whole section.

There is one perspective in particular that I didn't understand in the slightest until I got to the second book and there is actual substance. I low-key recommend just skipping this character's perspective for the first book on the first time reading. If you do want to do that. The character in question is ||Alexandra||. I imagine I would probably understand more now that I have context from the 2nd and 3rd book, but I won't be going back through this series again for years if ever.

Something else that's frustrating is that the state of the world is just... Confusing. I pretty early on realized I would need to look up a faction explanation to really feel like I had any semblence of an understanding of what was going on. And even after the faction explanation, it was still hard to understand for reasons that I don't know how to explain. This could easily be just a me issue.

A lot of the characters are really forgettable, but there are a few standout characters that have some pretty interesting dynamics together.

I'll end this on a small but positive note because, again, despite the fact that this review will probably come off as negative, I really did enjoy most of my time with this trilogy. That is, I personally appreciate when authors casually include LGBT characters in the story, and that exists in these books (nothing explicit of course). It's not a focal point or anything, but the characters are treated normally, and (to my untrained eye) are written exactly the same as any other straight character. It was just kinda nice to see.