I started reading them this year on a recommendation from a lemmist, and got a bit fatigued with them by book 4. It's my first foray into litrpg, and while they're a rollicking good read, it started to bother me that there was a bit too much 'rpg' and not enough 'lit' for me. By that I mean, I'm into the overarching story with the aliens and what they're up to, but not so much the dungeon crawling stuff, and all the stat's and leveling and so on, which is the majority of the content. It's a bit grindy, is what I'm saying.

That said I will get back to them, I think, after I finish the Stainless Steel Rat series I'm currently on.