Main menu key: there is a main menu key, which can be used to do whatever you want in a decadent world. Press a key or button to open the menu in the game start interface or during the game. This button is "Menu" and "Options".

2. Game interface menu: Do whatever you want in a decadent world. Add a menu button to the game interface. Click this button to open the game menu. This button is an icon in the corner of the screen.

3, shortcut key combination: in a decadent world, use a specific shortcut key combination to open the menu. Press Ctrl+M on the keyboard, or Ctrl+Esc, or Alt+Enter to open the game menu.