Boss Mode

In boss mode, your game window will dock at the right bottom corner, when your cursor moved out of the game window, an advertisement look with a close button appears like this:
Only if you click the grey button with text 'Try 30 days for free!', the normal game content will appear again, like this:
If you click the 'X' button of the advertisement page, the game will be closed.

Endless Mode

When you try to start a new game, you can choose to start an endless game other than a classic one. The difference is, an endless game will only end when all the cards in the pile at bottom right corner are placed on the table. If you start a new game before finishing current game, your score will not be recorded!!! You can get unlimited high score in an endless game! You can switch your game mode to endless mode by clicking the text showing the type of next new game until it shows '', then choose a difficulty to kick it off, just like this: