I of the Dragon (
Wikipedia link) is nearly 4 years old, and I don't think it got much publicity when it came out. I've only seen a few references to it around, and a couple years ago I only found one or two places that still carried it, other than the publisher's webstore.
I think it has been mentioned here a few times recently (and previously in various suggestion topics) because it is one of the few RPG / action RPG games (that I know of) where a character can fly, so serves as a reference for combat or control discussion, etc.
The first area of the demo contains simple opponents with almost no AI. Fly just over treetop level and keep moving, and you will almost never get hit. The second level contains different and stronger opponents, a couple of which have a little better AI. In this area you should be able to level up enough to get access to a better spells, upgrade your existing attacks and possibly learn new ones (the fighter class gets a seeking fireball attack, in addition to a straight fireball and close range breath attack).
Based on the demo I was hoping there would be additional AI advances in each new area. There were new creatures in each area, with some variety, but no significant advances in AI. IMO there were enough changes in environment, etc, and new skills to keep it playable (though just barely at times).