This series needs it own post! This is the most fun I have had reading a new book series since A Song of Ice and Fire. The premise sounded pretty silly at first, and I have never read a LitRPG book, but I blitzed through the entire series (7 books) in 2 weeks, about 90 hours on Audible, and I wish I could relive it all over again.
The story follows Carl and his cat, Princess Donut as they try to survive to the 18th level in an intergalactic game show, the World Dungeon. It is essentially a "video game" book as the characters gain new abilities, powers, and levels while exploring each level of the dungeon, which provides a new setting and objective in each book. The characters start very 2D before really getting fleshed out in subsequent books, but the constant throughout is the humor. This is the funniest fucking book I have ever listened to, multiple laugh out loud moments that made me look like a crazy person while listening in HEB. Extremely Surly brand of humor!
I highly recommend listening on Audible instead of just reading; the voice actor Jeff Hays is absolutely incredible. It is one dude, but you would legitimately think that it is a full cast. The audio also adds bonus sounds, and there is an "immersion tunnel" version that is even more insane with sound effects (this one was a bit much for my taste). The narration blows all other audio books out of the water.
If you are looking for a fun read that doesn't take itself too seriously, I promise you this is the one to start. It is soon to be adapted into a television show, and if done right, it has the potential to be one of the biggest IPs on the planet. It's Hunger Games meets Running Man meets South Park meets Fallout 4 all rolled into one easily consumable package. My entire friend group has been addicted, and I can guarantee the same here. God dammit Donut!