As a 'videogame' it's far from flawless, there are a lot of boring fetch quests that damages the pacing a lot, combat doesn't really go far from mindlessly clicking enemies and healing when it's necessary, there are some important content that are easy to miss(like most of the companions).And dungeon designs are very linear. But stuff the game does right are so good, it makes up for it. World is really detailed and unique(especially first areas)most of the NPC's has something worthwhile to say,and visual design of areas are varied and memorable.Story is one of the best i've ever seen in a game.It's engaging from beggining to the end with a lot of philosophical concepts,heavily supported by an incredibly quality writing.It's easily the best part of the game
My biggest problem aren't any of the gameplay or design issues i mentioned, it's the characters, they actually have fleshed out personalities, but only if you choose to talk to them.They aren't interacting with each other at all,and because most of them are optional, they have zero effect on the main story
Even with the flaws, i think this is an excellent game, and something everyone should experince