Hold SHIFT while clicking New Game will give you access to all the single player levels.
Just type in during gameplay...
| Hold CTRL-button and ALT-button and press + | win a level |
| Hold CTRL-button and ALT-button and press - | lose a level |
Just type in during gameplay...
| Hold CTRL-button and ALT-button and press + | win a level |
| Hold CTRL-button and ALT-button and press - | lose a level |