```xml
<?xml version="1.0" encoding="UTF-8"?>
<game>
  <title>Tower Builder</title>
  <slug>tower-builder</slug>
  <short-desc>An addictive HTML5 tower building game. Stack blocks as high as you can to build the tallest tower!</short-desc>
  <categories>
    <category>Arcade Game</category>
    <category>Stacking Game</category>
    <category>Skill Game</category>
  </categories>
  <keywords>tower builder, stacking game, HTML5 game, arcade game, skill game, timing game, one-button game, mobile game, block stacker, high score game</keywords>
  <content>
# About Tower Builder

Tower Builder is an engaging HTML5 arcade game where your primary objective is to construct the tallest tower imaginable by stacking blocks one on top of another. It's a captivating test of timing, precision, and reflexes. As you successfully stack blocks, your tower grows higher, and so does your score, displayed prominently on screen.

The game features vibrant, dynamically colored blocks that you must carefully place. Each successfully placed block adds to your score. However, any misaligned drop will shrink the width of the subsequent block, making your task progressively more challenging. Aim for perfect placements to maintain your current block width, and achieve streaks of perfect placements to even increase it, helping you reach new high scores! The game ends if a block becomes too narrow or misses the tower entirely.

## How to Play

The gameplay in Tower Builder is straightforward to learn but requires skill to master:

1.  **Start the Game**: Tap the screen or press the Spacebar to begin a new game or restart after a game over.
2.  **Moving Block**: A block will appear and start moving horizontally at the top of your current tower (or at the base for the first block after the foundation).
3.  **Place the Block**: Your goal is to stop the moving block directly above the previous one. Tap the screen (on mobile) or press the Spacebar (on desktop) at the precise moment to drop the block.
4.  **Overlap Determines Width**: The width of the newly placed block is determined by how much it overlaps with the block directly beneath it. The non-overlapping parts are cut off.
5.  **Perfect Placement**: If you manage to align the block almost perfectly in the center of the block below (within a small threshold), it will retain the full width of the block it landed on.
6.  **Streak Bonus for Growth**: Achieving three or more consecutive perfect placements will cause your block to grow slightly wider than the one below, making subsequent placements a bit easier. This streak is reset if a placement is not perfect.
7.  **Scoring**: Each successfully placed block (after the initial base) increases your score by one point.
8.  **Increasing Difficulty**: As your score gets higher, the speed of the moving block increases, demanding quicker reactions and better timing.
9.  **Game Over**: The game ends if a placed block becomes too small (below a minimum width factor relative to the screen size) or if it completely misses the tower. Your final score will then be displayed.
10. **Camera Adjustment**: The game view will smoothly pan upwards as your tower grows, keeping the top of the tower in focus.

## Features

-   **Addictive Stacking Gameplay**: Simple and intuitive one-touch/one-key mechanic that's easy to pick up but offers deep, challenging gameplay.
-   **Progressive Difficulty**: The speed of the moving block intelligently increases with your score, ensuring the challenge scales with your skill.
-   **Perfect Placement &amp; Streak System**: Rewards precision! Perfectly centered drops maintain block width, and a streak of three or more perfect placements makes the block grow wider.
-   **Dynamic Visuals**: Blocks change to a new vibrant color with each placement, creating an aesthetically pleasing and colorful tower as it grows.
-   **Responsive Design**: Seamlessly playable on various screen sizes, fully optimized for both desktop and mobile browsers.
-   **Smooth Camera Movement**: The game camera dynamically and smoothly follows your tower's height, keeping the action centered.
-   **Instant Restart**: Quickly jump back into the action with a simple tap or key press after a game over.

## Controls

-   **Tap the screen** (on mobile devices/touchscreens).
-   **Press the Spacebar** (on desktop keyboards).

These actions are used to:
    -   Start the game from the initial screen.
    -   Place the currently moving block onto the tower.
    -   Restart the game after a game over message.

## Tips & Strategies

-   **Focus on Centering**: Prioritize aligning the center of the moving block with the center of the block below. This is key to achieving perfect placements and maintaining block width.
-   **Master the Streak Bonus**: Consistently hitting perfect placements to trigger the width-increasing bonus is a powerful strategy to build a significantly taller tower.
-   **Adapt to Increasing Speed**: Be mentally prepared for the block speed to increase as your score climbs. Try to anticipate this change and adjust your timing accordingly. Don't get flustered by the faster pace.
-   **Rhythm and Observation**: Sometimes, it helps to find a rhythm with the block's movement. If you misplace a block and it narrows, take an extra moment to recalibrate your timing for the next, now smaller, target.
  </content>
  <faq>
    <question>How do I save my progress in the game?</question>
    <answer>This game is session-based. Your score is for the current game only and does not save when you close the browser or refresh the page. Each time you play, you start fresh, aiming for a new personal best!</answer>
    
    <question>Can I play this game on mobile devices?</question>
    <answer>Yes, Tower Builder is designed to be fully responsive and is compatible with modern mobile browsers on smartphones and tablets.</answer>
    
    <question>Is this game free to play?</question>
    <answer>Yes, Tower Builder is completely free to play in your web browser.</answer>
  </faq>
  <specifications>
    <multiplayer>false</multiplayer>
  </specifications>
</game>
```

An interactive game created with AI assistance