Let's get the negative out of the way first: Crab battles are annoying. they're little more than a weird side game that's lacking in depth, reward, relevance, and necessity, yet they're pushed frequently anyway.
The game can, and does, get really grindy at many points. Sometimes being the primary part of the game. Go hunt for jewels in the mountain every day, fight some bears, reload blackjack until you finally grind enough money to buy more units to grind battles so you can unlock the next scene. It's incredibly repetitive.
On the topic of battles, combat plays like a standard turn-based RPG, but, being made in Ren'Py, is hardly fun, deep, or solid enough to keep you entertained for more than a couple battles at a time. By the time you're in the fire kingdom, you're sick of them and would rather do literally anything else, but it's required for story progression.
The other methods of grinding are rarely any better. Mixing drinks is tedious and pays poorly even for perfection. Pulling tricks in Ba Sing Se gets old. Fast. Thankfully they're rarely the only way to make money, but they're hardly fun for long.
Speaking of Ba Sing Se, my last gripe is a minor one: Iroh. The author has turned him into a perverted old man with lowbrow sexual jokes, poorly executed references to the show, and no other defining character traits. Granted, taking him as-is from the show would feel out of place, and this new version of him is more suitable in tone for this game, but gods does the joke get old.
With all that said however, the rest of the game is phenomenal. The artwork, while of fluctuating quality at many points, stays very faithful to the show throughout the game's entirety while still inserting just enough of its own identity to make it stand out as its own creation, as well as make the sex scenes work.
The writing relies on randem xd humor a lot. That never changes, as much as you may want it to, but the humor has its moments. Even better when it doesn't rely on randomness to deliver the punchline. When the jokes don't land, they flop pretty badly, but when they land they're great jokes.
Even outside of the jokes, the writing continues to be leagues better than expected for an ATLA nsfw parody game. The drama hits hard, and the more wholesome moments hit harder. Playing through book one, it's unpolished in a lot of places, as expected of the first segment of the game. The slave route delves a bit too far into making you feel malicious, and the love route is corny and reads like a middle school idea of romance.
Despite this, by the time you reach book two, the author has significantly improved in every aspect of their work. The drama hits harder, the story is more complex, and best of all, the romance feels real. The quiet nights with Toph make you feel as though you really are there with her, in the moment. She's not just a cum receptacle, she's the woman you want to spend your days with, and the ending makes it all the better.
Book 3's routes are both equally great. From the satisfying crushing of Azula's ego and power in the slave route to the in-character confused expressions of a fucked up love in the romance route, it's well written enough to validate a run-through of both routes.
This game is truly incredible and reaches heights you never expected from what you likely took to be a poorly thought out porn parody that strings together sex scenes with a plot as thick as a needle, a la the cummy series. I look forward to the future updates of this game and the finale of its story.