How to pause the game?

  Press key ESC or click mouse right button to pop up a context menu, then the game will pause. Press key ESC again to continue your game.

  How many lives do I have left?

  There is a status bar at the top of screen, where you can find your life info.

  How to create the levels myself?

  Please run the Level Editor and click the "HELP" button to get more help info.

  How to load the custom levels?

  Click the "CUSTOM" button in the main menu to open a level loader dialog, highlight the level files you want to load and then click the "LOAD" button.

  Where is the detailed explaination about the bonus?

  Please open the game's help document and look at the chapter appendix.