Very solid RPG. The game is rich in content (you'll probably need more than 40 hours to reach the end) and delivers some particularly interesting exploration.
Character creation and customization are free, the world is open and big, the towns and dungeons all provide their dose of unique characters, key items, tool and/or equipement. Inside combat like outside combat you'll be able to cast spells, sing songs and use tools and consumables. The equipement is varied.
Every character you meet will be involved in your quest one way or another, providing you a new item, spell, song, important keyword or hint which will help you in one of the numerous subquests slowly carrying you to the final goal.
The dialog system is well used, you'll need to ask people the good questions in order to progress through the story. Moreover you'll meet a lot of charming characters and it's pleasant to talk with them.
The game is definitely not easy, it doesn't hold your hand, which is part of its charm. However the mandatory puzzles are logical and you'll certainly reach the end if you take the time to visit the world and pay attention to what people say.
Besides the game is polished, there are a lot of secrets and you'll probably not discover all of them. There are also some nice little things like seasons which change over time, which is not only cosmetic since during winter shallow water turns to ice and is easier to distinguish.
Overall it's a very enjoyable game.