Well, it isn't missing, it just isn't obvious.

It's the + sign next to the number of ready games.
Agreed perhaps an arrow to step through the games?
Also, I don't know if it is possible, but I've always wanted a "previous game" button as well.
We'll be addressing those issues in the next release (which should be very soon).
Thanks for the feedback!
Thanks. On a few occasions the next button did not advance to a different game, but kept showing the game I wanted to put on the back burner for a while. This just started today; I think it worked fine before, though not certain.
This feature missing in beta