
You could find The New Order for really cheap about six months ago but I don't know what's it's going for now. The Taken King is really good, especially if you have friends to play with regularly. I imagine it loses some luster when played alone all the way through.
Saturday Morning RPG is an homage to '80s cartoons as far as I know. I haven't played it yet, though, so that's just what I hear. People like it though.
You have me interested in Xeodrifter now. I might have to check that one out now...