In the following link is hosted the "Adventures Index". It is a huge Adventure games database, where all adventure games since the year 1984 are listed by year or letter, and also (if available) patches,pics,reviews, critic from the site owner. It is a greek database but there is also a Language selection on the left side under the Youtube Button near a google sign. The english language is the first one listed ("Αγγλικά" = "Agglika"="english" in greek). Try it! I am very satisfied with it! It is very detailed and it even lists the canceled games, games of unknown release date, games which will be soon published etc.
http://adventures-index2.blogspot.com/