The game just rarely builds up any intrigue. Side quests are chore most of the time. RPG mechanic is barely there outside alignment system and if you want to get the most out of the experience, you don't have any choice but to roll up mental abilities for more dialogue opportunities, which is the only selling point of the game, imo. Other systems are also really weak, which makes exploration and battling (and any other side activity) boring. You find things, but they barely affect anything, at least I didn't feel much effect. I believe the only way to love this experience is being really invested in the uniqueness of the world. In my case, it didn't do much for me and I couldn't really compensate the shortcomings I listed above with anything.
Furthest I got is when I added Fall-From-Grace to the party. Lower Ward it was? This time I dropped when I heard Pharod asking me to freaking retrieve something for him... I can't take it anymore.
Also, this game made me question if I even like reading or listen to what people have to say.
PS:T uses the DnD basic rule set, similar to Baldur's Gate and Icewind Dale, but a bit more limited. The combat itself works well enough, but it doesn't stand out. What does make PS:T unique is its narrative, which is one of the strongest in any game I have played (and I have played a lot). It's not just the story, but the world and the characters that bring the story to life. Your party is a mix of some of the most original individuals, each with their own agenda. The antagonists are well-written too and how it ties into the final battle with the choices you'll have to make. This is a game about consequences and finding yourself. There are, however, two issues with the game.
The first issue most people have is the amount of text they'll have to read. I am not a fan myself, but a lot of the text is actually well written and not random filler crap. Nowadays, players want excitement and they do not have the patience for games like PS:T.
Another issue is that the game doesn't spell anything out for you. You can finish the main story and actually still know nothing about the world and its inhabitants. There are actually a lot of interesting quests hidden away, including those about your own party tackling friendship, betrayal and love. Some playable characters are even hidden and can easily be missed.
TL;DR: PS:T is a game with a strong story and an original cast set in a unique world. There is no game like this. Also, when talking about PS:T I have to mention: