Alone in the Park is a hilarious semi-parody of adventure games; you can play it online via the link, and it takes a couple of hours to complete.
As the socially retarded, shut-in female protagonist, you travel around a park making snarky comments about the weird people and situations you encounter in your quest for the pieces of a treasure map.
The interface is straightforward and the caricatures and deadpan commentary quite funny. The part where Moira sent me to find a stone was a bit buggy and I had trouble finding all the locations I needed at times, but I made it to the end.
It was a fun way to waste an afternoon.
The developer is an Australian, Katherine Neil whose blog seems somewhat messed up.