This had heavy decline implication in the design of enemies and levels by the way. Because the game allowed you to create any type of character, and while you had a single companion party member, that one was garbage AI controlled crap, everything had to be tuned down to allow for even the weakest of character build, like a character that only levelled as a Fighter class, to take down ANYTHING in the game. So you never end up meeting anything that could truly hard counter you. And level design doesn't have particularly deadly traps and the likes.NWN's D&D 3E ruleset is great, but the actual gameplay implementation is terrible. Slowest and most boring RtwP-combat ever, no companion control,
It also induced the need to rest constantly if you played a pure caster type. It's a major shift over IE games, where you can rest every 10 seconds to get all your spells back if you want to.. but you don't HAVE to. You do it if you're a faggot who can't play the game without constantly casting nukes. But the gameplay loop can be fluid and less interrupted if you don't rest all the time and have a decently varied party of adventurers.
It's particularly obnoxious during the first hour of gametime in NWN.
D&D ultimately is about party of adventurers conquering varied challenges and using multiple tools to face the unknown. It just doesn't work in a game that forces you to play as a single character.
NWN was a mistake.