Favorite ags game is "Prodigal" and I did beta beta testing and I'm sure you'll enjoy it! I't a freeware!
Prodigal
That game got rewarded as best story game few years ago (read interview)
http://www.reloaded.org/interview.php?IntID=21&PID=201
The developper is doing a commercial one as sequel.
Be free to play first one and if you want help out with sequel by all means contact the developper! He'll appreciate that!