[b]Changes:[/b] -Added unlockable items: one background and 5 buttons. Unlocking conditions can be found in the "Collection" section. -Added a "Collection" section where you can view all the buttons you have and read about their actions. -Added 6 new buttons: -"Subtract from 100": subtracts the current number from 100 (if the number is greater than 100, the result is 0). -"Morpher A": replaces the penultimate digit of the number with the selected one. -"Morpher B": replaces the last digit of the number with the chosen one. -"Equalizer": sets all digits of the current number to the chosen digit. -"Mining": adds 1 coin when used (receives 1 charge each round). -"Exchange": adds one to the current number, spending one coin (if more than 0). Changed the actions of the following buttons: -"Battery": adds 1 charge to a random button (receives 1 charge each round). -Added separate sound and music controls in the settings. Also added a background change feature. -Fixed a bug where some sounds did not depend on settings. -Added difficulty level 5: After defeating the boss, charges on some buttons change. -Added difficulty level 6: Maximum number of buttons in the calculator: 24. -The game now shows notifications for which button has been discharged or charged. -Fixed a bug with the "Near" button. -Fixed several critical bugs. -The button descriptions on English have been changed. -New boss: "You must use button X; otherwise, the answer will not be counted." -New boss: "You lose 1 coin when using the button (if more than 0)."