Tetris

Tetris is a puzzle game in which small squares of different shapes fall from the top of the screen in turn, and the player adjusts the position and orientation of the tiles so that they spell out one or more complete strips at the bottom of the screen. These complete bars disappear to make room for newly fallen tiles, while players are rewarded with points. Blocks that have not been eliminated are constantly piled up, and once they reach the top of the screen, the player loses and the game ends.

## Gameplay

### Basic Rules

* How to play: Move, rotate and place falling blocks above to form one or more full rows and eliminate points.
* Field: Row width is 10, column height is 20, in units of each small square.
* Blocks: A set of 7 regular shapes consisting of 4 small squares
* Eliminate rows: Once the block is fixed, rows that are completely filled can be eliminated.
* Death: The block exceeds 20 rows after it is fixed.
* Combo: Consecutive blocks are eliminated.
* Speed: The speed at which the block naturally falls, +1 for every 20 rows eliminated.
* Full Clear: After the blocks are eliminated, no blocks are left on the field.

## Control Instructions

The Control supports classic mode and single finger mode, classic mode supports both keys and gestures, and the key position can be customized in the settings.

### Keystroke

* Move to the left
* Move to the right
* Rotate left (counterclockwise)
* Rotate to the right (clockwise)
* Quick landing (soft landing)
* Immediate landing (hard landing)

### Gesture:

* Move: Swipe left and right
* Rotate: Tap the screen
* Landing: Swipe down
* Single finger mode:
* Placement: Click any preview position to position it
* Switch: Tap anywhere outside the preview in the venue to switch the placement scheme

### Scoring Rules

* Place Blocks: +10
* Eliminate a row: +100 \* speed
* Eliminate two rows: +300\* speed
* Eliminate three rows: +600\* speed
* Eliminate four rows: +1000\* speed
* Combo: +100 \* Speed \* (Combo - 1)

### Attack Rules

In online battles, you can attack each other, add garbage to each other, and finally push the other party out of the field, and your own side wins. Give each other a maximum of +4 garbage rows.

### Attack Power

* Eliminate a line: +0
* Eliminate two lines: +1
* Eliminate three lines: +2
* Eliminate the four lines: +3
* Full clear: +4
* Combos: Increases attack power, the higher the combo, the more it increases

### Description of the Qualifying

The dan rank is used to measure the player's game level, which is a more realistic reflection of the player's strength, and the higher the dan rank, the higher the strength. In online matches, players are automatically matched with the closest opponent to ensure a 50% chance of winning.

There are six ranks:

* The bronze rank is divided into two small steps, each with two stars
* The silver rank is divided into two small steps, each with two stars
* The golden rank is divided into three small steps, each with three stars
* The platinum rank is divided into four small steps, each with four stars
* The diamond rank is divided into five small steps, each with five stars
* The king rank is not divided into ranks, and the stars accumulate

### Four-person brawl

The four-player brawl mode is a more exciting way to play, where four people are randomly matched, attacking opponents in a loop, switching attack objects every 8s until the final survivor is decided.

For example, ABCD has four players in a game, and at the beginning A attacks B, B attacks C, C attacks D, and D attacks A. After 8s, the attack object rotates and switches to A attacks C, B attacks D, C attacks A, and D attacks B.

### Powerup Description

In the Item Field Battle Match, various items are randomly generated, and the elimination takes effect.

## Ranking Mode

 Sliver
 Gold
 Platinum
 Diamond
 King

## Gameplay

### Classic

* Removal n Rows can takes add n-1 row.
* Combo achieves higher, add floors higher.

## Match Mode

2 Diamonds
1 Diamond
 高手锦标赛
200 Diamonds
100 Diamonds
 精英对决赛
1000 Diamonds
500 Diamonds