Russian classic handheld box

Here comes the classic box and greedy snake we played as children!
Classic game, I hope you like it~
Classic Square:
1: Basic operation: the red button on the right starts / pauses the game, the up, down, left and right buttons on the left are used to control the direction, and the rotation button in the lower right corner can rotate the box in units of 90 degrees.
2: Special operation: before the game starts: the left and right buttons can adjust the falling speed, and the up and down buttons can adjust the number of starting layers. At the beginning of the game: long press the down button to quickly lower the square to the bottom, click the up button to immediately lower the square to the bottom, and long press the left and right buttons to quickly move the square to the left and right.
3: Rules of the game: the box cannot be moved after moving to the lowest area or touching other boxes. It is fixed here. At this time, a new box will appear at the top of the screen. When the horizontal grid of a column in the area is filled with squares, the column will disappear and become your score. At the same time, the more columns deleted, the higher the score. When the fixed blocks pile up to the top of the screen and the number of layers cannot be eliminated, the game ends.
Greedy Snake:
1: Rules of the game: use the up, down, left and right buttons to control the direction of the snake and find the box to eat. You can get a certain score for each bite, and the snake will eat longer and longer. The difficulty of the game will increase with the length of the body. You can't touch the wall, bite your own body, or bite your own tail.
2: Special operation: at the beginning of the game: long press the up, down, left and right buttons to move the box quickly in the direction of long press the button, so as to eat the box quickly.