Main menu

The main menu is the user interface that appears first when you launch the game.

It shows Diogenes' rock climbing hammer as background illustration, and the game's version number in the top right corner. In the middle are the options that the player can choose by clicking on them:
 * Continue (only appears if the player has an old game in progress, and selecting continues that game)
 * New Game (starts a new climb up the mountain)
 * Settings (opens the settings interface)
 * Credits (plays the credits)
 * Quit (quits the game)