It needs to be easier. Right now it's kind of a pain in the butt because the change game link is buried in the dashboard menu and then you have to click into the game. There seems to be plenty of space in the menu to add a "World" or "Game World" menu with a dropdown menu of all the games a player is in. Something like this:
- Dawn of the Millennium #6
- North American Challenge
- View All
Clicking the link would log you out of the current game, log you into the new game, and take you to the dashboard. That would save many clicks and to my knowledge would only be a few lines of code.