2048 · gemini-3.1-flash-lite-preview
Build a playable 2048 game with arrow-key tile sliding and merging, smooth animations, a score, and win and lose states.
transcript · 4 messages
Build a playable 2048 game with arrow-key tile sliding and merging, smooth animations, a score, and win and lose states.
thinking
**Defining Project Scope** Okay, I'm now zeroing in on defining the project's parameters. The core objective is a playable 2048 game encapsulated within a single HTML file. The fundamental features are locked in: arrow key controls, score, win/lose conditions, and smooth CSS animations. I am considering the specific data structures and the scope of animations. **Refining Core Implementation** Okay, I've outlined the project, and I'm homing in on the architecture of the game. I'll stick with a 4x4 grid and a 2D array representation. My plan is to use HTML for container structure, CSS for layout and animations, and JavaScript for game logic. I need to make sure the app is responsive, and to nail the animations. I think I'll use CSS to simply re-render and control animations this way.
index.html (7827 bytes)Successfully wrote 7827 bytes to index.html
The 2048 game has been implemented as a single, self-contained `index.html` file. It features tile sliding, merging logic, a score tracker, smooth CSS-based transitions, and game-over detection. You can open `index.html` in any web browser to play. ```html <!-- index.html contents --> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>2048 Game</title> <style> body { font-family: 'Arial', sans-serif; display: flex; flex-direction: column; align-items: center; justify-content: center; height: 100vh; margin: 0; background-color: #faf8ef; } #header { text-align: center; margin-bottom: 10px; } #score-board { font-size: 24px; font-weight: bold; margin-bottom: 10px; } #game-container { position: relative; width: 400px; height: 400px; background-color: #bbada0; border-radius: 6px; padding: 10px; box-sizing: border-box; touch-action: none; } .grid-cell { position: absolute; width: 90px; height: 90px; background-color: rgba(238, 228, 218, 0.35); border-radius: 3px; } .tile { position: absolute; width: 90px; height: 90px; border-radius: 3px; font-weight: bold; font-size: 35px; display: flex; align-items: center; justify-content: center; transition: transform 0.12s ease-in-out, opacity 0.12s ease-in-out; color: #776e65; } .tile-2 { background-color: #eee4da; } .tile-4 { background-color: #ede0c8; } .tile-8 { background-color: #f2b179; color: #f9f6f2; } .tile-16 { background-color: #f59563; color: #f9f6f2; } .tile-32 { background-color: #f67c5f; color: #f9f6f2; } .tile-64 { background-color: #f65e3b; color: #f9f6f2; } .tile-128 { background-color: #edcf72; color: #f9f6f2; font-size: 30px; } .tile-256 { background-color: #edcc61; color: #f9f6f2; font-size: 30px; } .tile-512 { background-color: #edc850; color: #f9f6f2; font-size: 30px; } .tile-1024 { background-color: #edc53f; color: #f9f6f2; font-size: 25px; } .tile-2048 { background-color: #edc22e; color: #f9f6f2; font-size: 25px; } #overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(238, 228, 218, 0.73); display: none; flex-direction: column; align-items: center; justify-content: center; z-index: 10; font-size: 40px; font-weight: bold; } button { margin-top: 20px; padding: 10px 20px; font-size: 16px; cursor: pointer; background: #8f7a66; color: white; border: none; border-radius: 3px; } </style> </head> <body> <div id="header"> <h1>2048</h1> <div id="score-board">Score: 0</div> </div> <div id="game-container"> <div id="overlay"></div> </div> <button onclick="resetGame()">New Game</button> ... ```
TAKE IT TO CODE
A single self-contained HTML file — copy it and open in any browser, or reuse the prompt with your own pi-agent run.
RUN
EVALUATION
2048 game responds to arrow keys with tile movement/merging and score updates, but WASD, click, drag, wheel have no effect.
Vision grade · anthropic/claude-sonnet-5
MEASUREMENTS
Raw readings from the capture, not a verdict — the grade above is the only judgement. Percentages are how much of the screen changed; the measure under-reports sparse motion on a dark background.