Tetris is a globally iconic classic puzzle game. Its core gameplay involves rotating and moving descending tetrominoes to form and clear horizontal lines for points. Centered around seven distinct four-square tetromino shapes, the game is easy to pick up but deeply challenging, catering to both casual players seeking quick, lighthearted fun and hardcore enthusiasts aiming for high scores. It tests players’ reflexes, spatial reasoning, and strategic planning abilities to sustain play as the falling speed increases over time.

Tetris’ core objective is to manipulate descending tetrominoes by moving and rotating them to stack and fill complete horizontal lines for clearing, thereby accumulating points and line clears. As the number of cleared lines increases, the game level rises progressively, accelerating tetromino fall speed and ramping up the challenge. Players must sustain gameplay as long as possible and set new high scores before the playfield becomes fully stacked.

• Tetromino & Playfield Mechanics: The seven distinct tetromino shapes spawn randomly at the top of the playfield and lock into place once they land on the bottom boundary or other stacked tetrominoes. A horizontal line is cleared when fully filled; blocks above the cleared line then drop down to fill the gap automatically。
• Scoring Rules: Points increase with the number of lines cleared in a single move. A single line clear awards 10 points, with points scaling upward for multi-line clears。
• Level & Speed Correlation: Game level advances as lines are cleared, accelerating tetromino fall speed. Players must continuously adapt to the increasing pace to sustain play。
• Game Interface: Displays HI-SCORE, total lines cleared, current level, upcoming tetromino preview, and elapsed time。
• Game Over Condition: The game ends when a new spawning tetromino cannot be placed within the playfield, i.e., the stack reaches the top boundary of the playfield, resulting in a top-out。

Game Controls

Why can't the blocks rotate sometimes?

Does the game speed keep increasing?

Can keyboard and mouse controls be used at the same time?

Are there any other changes when leveling up besides faster block speed?