UNTetris Physics Puzzle Game

Developer: Boulder Core Works

Published: 2026-03-03

Updated: 2026-06-12

Arcade Classic Puzzle

Reviews

UNTetris offers a fresh take on block puzzles by adding realistic physics. The gameplay is straightforward: remove pieces to guide a marble into a hole. The physics engine makes each move feel meaningful, as blocks can fall and affect the marble's path. The levels gradually increase in difficulty, providing good replayability. It is a well-made, family-friendly game that is perfect for quick sessions.

About this game

Game Introduction

UNTetris is a physics puzzle game that blends classic block removal with realistic gravity. The core objective is to guide a marble into a hole by strategically removing Tetris pieces from the screen. Each level presents a new arrangement of blocks, and you must decide which pieces to take away to create a clear path for the marble. The physics engine adds a layer of realism: pieces stacked on top of each other can become unstable and may fall off, potentially affecting the marble's trajectory. This game is designed for desktop play and offers a full-screen mode for a more immersive experience. It is free to play directly in your browser, making it accessible to everyone. UNTetris combines classic block puzzle mechanics with physics, offering a fresh and entertaining challenge for puzzle enthusiasts of all ages.

How to Play

To play UNTetris, use your mouse or keyboard to interact with the Tetris pieces on the screen. Your main objective is to remove these pieces to create a clear path for the marble to fall into the hole. Click on a piece to remove it, but be careful: pieces that are stacked may fall off due to gravity, potentially affecting the marble's trajectory. Keep an eye on the ball at all times to prevent it from rolling off the edge. The game requires careful planning and timing, as removing the wrong piece could cause the marble to fall or get stuck. Each level gets progressively harder, testing your ability to think ahead. Enjoy this physics-based puzzle experience on your computer for free.

Game Features

Physics-based block removal puzzle with marble navigation. Each level offers a unique arrangement of blocks. The game includes realistic gravity and physics. It is free to play in your browser with full-screen mode available. Suitable for players of all ages.

Tips for Success

You will enjoy UNTetris because it combines simple puzzle mechanics with realistic physics, creating a satisfying challenge. The game is easy to learn but offers increasing difficulty that keeps you engaged. It is a great way to relax and exercise your problem-solving skills.

Compatibility

• OS: Windows 10+, macOS 11+, iOS 14+, Android 10+

• Browsers: Chrome 100+, Safari 15+, Edge 100+, Firefox 100+

• Not compatible with Internet Explorer

Tested on real devices ✅ works as expected

Faq

Is UNTetris free to play?

Yes, UNTetris is free to play directly in your browser. There is no need to download or install any software. Simply visit the game page and start playing immediately.

Can I play UNTetris on my mobile device?

The game is designed for desktop play. While it may load on some mobile browsers, the experience is optimized for a mouse and keyboard on a computer. Full-screen mode is available for desktop users.

Does UNTetris have different difficulty levels?

The game features progressively harder levels. Each new level presents a more complex arrangement of blocks, requiring greater planning and timing to successfully guide the marble into the hole.

What happens if I remove the wrong piece?

Removing the wrong piece can cause the marble to fall off the edge or become stuck. It may also cause stacked blocks to tumble, altering the marble's path. Careful planning is key to success.

Can I undo a move in UNTetris?

The game does not specify an undo feature. Typically, in such physics-based puzzles, moves are permanent, so it's important to think ahead before removing any piece.

Is there a time limit in UNTetris?

The game description does not mention a time limit. Players can take their time to analyze the block arrangement and plan their moves, making it a relaxing puzzle experience.