Online Tetris Game delivers a faithful recreation of the iconic falling-block puzzle, optimised for modern browsers and touch-enabled devices. The implementation provides responsive canvas rendering, colour-coded tetrominoes, intuitive keyboard shortcuts, and fullscreen support, ensuring uninterrupted gameplay whether you are practising line clears during a break or challenging friends to surpass your high-score marathon.
Each session dynamically adjusts the board and preview pane to the available viewport, guaranteeing crisp visuals from compact phone screens to ultra-wide monitors. The algorithm scales square dimensions, limits maximum level speed, and maintains optimal performance through lightweight Vue reactivity, meaning you experience smooth soft drops, rotations, and sound-effect-free concentration, without unnecessary bandwidth or processing overhead.
Classified under games and fun categories, the title integrates seamlessly with Bootstrap styling while remaining script-agnostic for embedding in any learning management system or personal portal. Teachers appreciate the straightforward interface for classroom challenges, whereas enthusiasts value the authentic scoring logic, next-piece forecasting, and elegant dark-toned backdrop that minimises eye strain during extended play sessions.
Technical Details
The following technical highlights outline the features, configuration parameters, and scoring behaviour implemented in Online Tetris Game.
- Responsive canvas rescaling for resolutions from 18 px to 60 px per square
- Seven canonical tetromino definitions with colour-coded fill and subtle shading
- Dynamic next-piece preview rendered on a dedicated square canvas
- Configurable base speed, level progression, and wall-kick rotation logic
- Keyboard shortcuts for movement, rotation, pause, and fullscreen toggling
- Lightweight Vue reactivity to maintain state without external dependencies
- Clean separation between rendering, collision detection, and scoring functions
- Accessibility-friendly overlays for start, pause, and game-over states
Scoring & Speed Reference
| Lines Cleared |
Points Awarded |
Speed Adjustment (ms) |
| 1 | 10 | -0 |
| 2 | 20 | -0 |
| 3 | 30 | -0 |
| 4 (Tetris) | 40 | -0 |
| Every 10 Lines | Level +1 | -100 |
// Example: start a hard session at level 5
document.getElementById('startHardBtn').click();
Step-by-Step Guide
Follow these steps to begin playing and mastering the interface.
- Select Easy, Normal, or Hard on the start overlayTip
- Use ← and → to shift tetrominoes horizontally
- Press ↑ to rotate clockwise; a gentle wall-kick prevents overlapCaution
- Hold ↓ for a soft drop that accelerates descent without locking
- Tap Space or P to pause and resume as needed
- Activate fullscreen with F or the top-right expand icon for an immersive view
FAQ
Answers to frequently asked questions regarding gameplay, controls, and performance.
Does the game support touch input?
The canvas currently responds to keyboard events only. Attach a Bluetooth keyboard to your mobile device for optimal control.
Why does the board resize when I change window size?
A resize listener recalculates square dimensions to maintain maximum visibility while preserving aspect ratio.
How is the score calculated?
Each cleared line grants ten points; clearing multiple lines at once multiplies the reward, and every ten lines increases the level.
Can I customise colours or speed?
Fork the script.js file and adjust the tetrominoes array or baseSpeed configuration to suit your preference.
Is my progress saved between sessions?
Scores and statistics reset on page reload to keep the experience stateless and privacy-friendly.
Troubleshooting
Resolve common issues quickly with the guidance below.
- No canvas visible – Ensure your browser supports HTML5 canvas and JavaScript is enabled.
- Keyboard unresponsive – Click inside the game container to set focus before using arrow keys.
- Full-screen fails – Browser may block fullscreen in insecure contexts. Switch to
https.
- Performance drops on older hardware – Reduce window size to lower canvas resolution and lighten rendering load.
- Game ends immediately – Rapid collision at spawn indicates viewport too narrow; expand window or exit fullscreen.
Persistent input lag may result from system-level key remapping utilities. Disable them temporarily to restore real-time control.
Advanced Tips
Elevate your gameplay with professional-level techniques.
- Stack flat surfaces on the left to reserve the right edge for long-bar Tetrises.
- Rotate just before touchdown to squeeze pieces into tight wells.
- Hold soft drop to accelerate line clears but release early to avoid accidental locks.
- Watch the next-piece preview and pre-align gaps at least two moves ahead.
- Maintain a balanced stack height to delay top-out and maximise score during high-speed levels.
Glossary
Key terms referenced throughout this guide.
- Tetromino
- A geometric shape composed of four connected squares.
- Soft Drop
- A controlled descent that speeds up the piece without immediate locking.
- Wall-Kick
- A rotation adjustment allowing pieces to rotate near walls or stacks.
- Tetris
- The act of clearing four lines simultaneously with the long bar.
- Top-Out
- Game-over state triggered when new pieces cannot enter the board.