Loving the series, finished off the books. Listening to the audio books now as background audio for the most part. Finished off the stuff at the back of the physicals :v
Operation Bounce House was also fun one to go through after finishing Carl.
Can't wait till the next one :)
Got a friend hooked now, lent the first two books to them, and got others hooked on the audio xD
Can't believe I hadn't found these sooner.
This was my first foray into LitRPG, so I can't recommend anything similar. But I will say (mostly commenting so I can come back later and find other recommendations, mruu haha) that the last time I found a series of this overall scale and page-turnicity (coining it (too many coffee-induced parentheticals sorry)) was Glen Cook's Chronicles of the Black Company.
Oh god, I'm as annoying as my son. Oh shit, I owe him an apology. I owe the world an apology, there are two of us now. Anyway, Black Company. Main takeaway.