“Critical Failures II: Fail Harder” and “Critical Failures III: A Storm of S-Swords” by Robert Bevan

With the apparent death of the GM, the cast of Critical Failures set off to find another way home from the rpg world they’re trapped in. Along the way they meet the other folks who have been trapped there and get in way over their heads as one of their own goes native. The third book then follows their seeming success in getting home, which turns out to be not what they wanted at all. Also: Poop, fart, vomit, erection, erectile dysfunction, giant dildo, boobies, your mother, homophobia, urine, accidental castration, more poop, drunkenness, stoners, threat of rape, ugly naked dudes masturbating and deus ex machina.

( Spoilers that probably won't make sense because they're complaining about game rules and consistency. )

Overall: The book series remains “not particularly recommended”, though there were a couple of points in the latter two books where I actively laughed. (If they weren’t free via Amazon Unlimited, I wouldn’t have gone looking for them.) But again, it got my brain going, so hey!