Hope this is the right forum to post this in, if not my apologies.
Something that you may want to consider is a sticky containing a list of open source games made with AGS or maybe an option on the 'Find Games' page. From what I've heard many of the 'Ocean Spirit Dennis' games are open source.
As far as I know, there aren't enough open source AGS games to warrant such a thread.
But I could be wrong.
There are a bunch, and the question has come up a number of times (just do a thread search). There's a list on the Wiki, but it's very incomplete.
If anyone wants to update the wiki or post a better list we could sticky, I'm sure that would be appreciated.
I made such thread 2 years ago:
http://www.adventuregamestudio.co.uk/forums/index.php?topic=50980.0