. "Players can 'pay to play' Polar Station from level 16 onward, where they can choose to pay with crystals (which will need to be bought with real money) to unlock the Picture early, rather than waiting until they reach level 17 and unlock it for free, through normal game play. From the Diary:"@en . . "Players can 'pay to play' Polar Station from level 16 onward, where they can choose to pay with crystals (which will need to be bought with real money) to unlock the Picture early, rather than waiting until they reach level 17 and unlock it for free, through normal game play. From the Diary:"@en . . . . . "Polar Station"@en .