Although I personally don't use the games plugin and I would never think about writing something like that (in my opinion, an IDE is a tool, not a toy), I don't see why it is a bad thing to have it distributed. Not few people enjoy this plugin, why not let them have it, there's no harm.
If nothing else, then the games plugin is an excellent tech-demo which shows that a cbEditor does not necessarily have to be a text editor (and not even an editor at all!).
Apart from that, it is quite cool to have something like this, even if it is not useful. Those who owned a Mac back in the early 1990s will surely remember the most important system extension that every power user had to have: blinking lights! The point is not that it is useful, the point is that you show off you can do it.
Also, looking at the differences between RC2 and the upcoming RC3, I guess that nobody will seriously suspect we have been taking a prolonged off-time.