About Stack Tower

The Game

What is Stack Tower?

Stack Tower is a browser-based block stacking game. A coloured block slides back and forth across the screen. You tap, click, or press Space to drop it onto the tower below. The portion that overlaps with the block underneath stays on the tower. The rest falls away.

Each imprecise drop trims the block width to only the overlapping area. Drop a block perfectly aligned and it earns a Perfect bonus — the block width stays the same and you get extra points. The game ends when a block misses the tower entirely.

The game runs entirely in your browser using HTML5 Canvas. It works on desktop computers, tablets, and mobile phones without any installation or account creation.

Technology

How It Is Built

Stack Tower is built entirely with standard web technologies. No frameworks, no external game engines, no third-party libraries.

HTML5

The game page is a standard HTML5 document. The canvas element provides the drawing surface for the game.

JavaScript

The game logic, animation loop, collision detection, and scoring are all written in plain JavaScript with no external libraries.

HTML5 Canvas

All game graphics — blocks, particles, HUD, and animations — are drawn programmatically onto an HTML5 Canvas element.

CSS3

The website layout, typography, and responsive design are handled with CSS3. No CSS frameworks are used.

Local Storage

Your best score is saved in the browser's local storage. It persists between sessions without any server-side storage.

Self-Hosted Fonts

All fonts are served from the same domain as the game. No external font CDN requests are made when the page loads.

FAQ

Common Questions

Does Stack Tower require an account?

No. The game runs directly in your browser. No account, login, or registration is required at any point.

Does the game work on mobile?

Yes. Stack Tower works on mobile phones and tablets. Tap the canvas to drop blocks. The canvas scales to fit your screen size.

Is my score saved?

Your best score is saved in your browser's local storage. It is stored only on your device and is not sent to any server.

What is a Perfect drop?

A Perfect drop occurs when the dropped block aligns almost exactly with the block below it — within a 4-pixel threshold. The block width does not shrink and you receive a bonus of 15 points plus a combo multiplier for consecutive Perfects.

Does the game get harder over time?

Yes. The moving block speeds up as your score increases. Each level raises the speed, making precise timing more difficult as you progress.

Are there any in-app purchases?

No. Stack Tower has no in-app purchases, subscriptions, or paid features of any kind.