I just grabbed it on Steam! It may take me a while to get to it, but I'll let you know what I think. I'll have to check out OneShot as well.
One game I thought did a good job with meta elements (though it's a LONG game) is Ar Nosurge for PS3 and PS Vita. It's a JRPG in which (without spoiling too much, I hope) some of the characters eventually become aware of your, the player's, existence. Also generally a good game if you like JRPGs. 🙂
RE: Scary Thoughts About 'Pony Island'