Tyranny
I just completed this a couple of hours ago. It took me just over 40 hours to do everything I could find, including the "Bastard's Wound" expansion, and I really liked the game overall.
The most interesting thing about Tyranny is its setting. Instead of being the chosen one out to save the world, you're a high-ranking official in a brutal, conquering regime, and it's your duty to act basically as judge, jury, and executioner as you see fit, in order to carry out the will of Overlord Kyros. The game gives you quite some leeway in how you solve problems, and you can be as brutal or lenient (or even traitorous) as you want. In true Obsidian style, there are multiple factions to ally with or betray, and many of the choices you make throughout the game determine where the story goes and how it ends.
It plays mostly like any other similar isometric RPG with real-time-with-pause combat (Baldur's Gate, Pillars, etc.). There are some interesting differences, however. The most interesting is the spell creation system, in which you combine a root element with various effect sigils. Even better, you can upgrade your existing spells by swapping in more powerful sigils as you find them and also by adding even more effects as your Lore skill improves throughout the game.
Unlike many other similar games, I actually found the companions to be interesting and mostly likeable, though Verse does suffer from "edgy badass" syndrome from time to time. One very cool thing about companion interaction is that you can inspire loyalty or fear (or both!) in them, and each "path" unlocks a unique ability from them. The loyalty/fear score also unlocks dialogue options throughout the game.
Character and party development are both excellent. In addition to leveling up with experience points, each character has a bunch of skills that level up with use or through training. You can even "lock" skills you don't need so that your other skills level up faster. Most of the equipment you find is your typical modern RPG trash ("+0.7% DPS," "10 fire damage on critical hit," etc.), the game is actually chock full of artifact weapons and armor with unique abilities unlocked through use. You also eventually unlock the ability to create and upgrade equipment at a forge.
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Unfortunately, the game (on the default difficulty level anyway) becomes unbelievably easy not even halfway through the game. You automatically heal in between fights, and all abilities/spells are on countdown timers (with the exception of a handful of unique abilities that can only be used once per rest), so there is no resource management whatsoever. Every battle ends up feeling pretty much the same a few hours into the game.
Also unfortunate is that some of the dialogue is extremely juvenile and crass, which stands in stark contrast with the serious and somber tone of the game. Unfortunately, most of this dialogue comes from the two major factions of the game, so it sometimes seems like every other character is an edgy badass written by a 13-year-old. This reaches its worst point fairly early into the game, where you have to stand there while the leaders of these two factions bicker and insult each other like children.
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Although combat and some of the dialogue are pretty disappointing, it was worth putting up with some dull combat and awkward text to play such an entertaining game, and I could definitely see myself playing through it again and making different choices.