Tetris

Master the classic Tetris puzzle! Rotate and drop falling blocks to clear lines, level up, and survive as speed increases. Features ghost piece, hold piece, and hard drop for advanced play.

How to Play:
Tetris is the iconic block-stacking puzzle game where you rotate and arrange falling tetrominoes to complete full horizontal lines. Cleared lines earn points and push you to the next level.

Objective:
Clear as many lines as possible to score points. Every 10 lines cleared advances you to the next level, making blocks fall faster. Survive as long as you can!

Controls:
- Move Left/Right: A/D keys or Left/Right Arrow keys (hold for auto-repeat)
- Rotate: W key or Up Arrow key
- Soft Drop: S key or Down Arrow key (+1 point per cell dropped)
- Hard Drop: Space bar β€” instantly drops the piece (+2 points per cell)
- Hold Piece: C key β€” swap current piece with held piece (once per drop)
- Restart: Space or R after game over
- Mobile: Swipe left/right to move, swipe up to rotate, swipe down for hard drop, tap to rotate

Scoring:
- Soft drop: +1 point per cell
- Hard drop: +2 points per cell
- Single line cleared: +100 points Γ— level
- Double (2 lines): +300 points Γ— level
- Triple (3 lines): +500 points Γ— level
- Tetris (4 lines): +800 points Γ— level

Difficulty Levels:
- Easy: Slower initial drop speed (48 frames) β€” relaxed pace to plan your moves
- Medium: Moderate speed (36 frames) β€” the classic Tetris experience
- Hard: Fast initial speed (24 frames) β€” intense action for experienced players

Game Features:
- All 7 classic tetrominoes (I, O, T, S, Z, L, J) with signature colors
- Ghost piece shows where your block will land
- Hold piece system β€” swap a difficult piece for the next one
- Next piece preview so you can plan ahead
- Wall kick system β€” rotations adjust automatically near walls
- Progressive speed β€” each level increases drop speed
- DAS (Delayed Auto Shift) for smooth, fast horizontal movement
- 3D-shaded block visuals with a dark neon theme

Pro Tips:
- Keep your stack even β€” avoid creating holes that make clearing harder
- Use the Hold piece for awkward I-tetrominoes when you need a Tetris
- On Hard mode, the fast initial speed means you need to react quickly β€” practice placement patterns
- Build from the bottom up and always have at least one clear column remaining
- Hard dropping saves time and earns bonus points β€” use it once you are confident

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