Having eagerly ripped open my newly arrived toy, I've just installed the Raspbian Wheezy image & am impressed that it really does just boot and appears to work - however, the Python Games that come with it - whenever a game starts it says "press a key to start" and when I press a key it drops back to the menu of games again - does anyone know what I might be doing wrong please!
Although this question is rather old maybe there are others still interested in an answer.
As @Chris stated the problems could be related to missing packages. To test this you could start the game in a terminal. Therefore open up a terminal:
cd /home/pi/python_games python <game>.py # where `<game>` is the game you want to start!
If there are really missing packages you should now be able to read an error message pointing to it. Knowing the missing package name you can use
apt-get to install it. Start over again and install every missing package until the game finally starts.