2048 · gpt-6.1-terra
Output generated Cost / run $0.0502 Runtime 57.7s
Prompt for this run
Build a playable 2048 game using HTML elements and CSS with a 4 by 4 board. Use HTML, CSS, and JavaScript as needed. Write it to `index.html` in the current working directory using your file tools. Inline your own CSS and JavaScript. Do not use external assets, CDNs, or network requests. No third-party libraries are provided. Required behavior: - Arrow keys slide tiles toward the selected edge. Adjacent equal tiles merge once per tile per move, and the score increases by the value of each new merged tile. - For example, moving [2, 2, 2, 2] left produces [4, 4, 0, 0], not [8, 0, 0, 0]. Moving [2, 2, 4, 0] left produces [4, 4, 0, 0]. These examples describe the move before spawning a new tile. - Start with two tiles. After a move that changes the board, spawn exactly one tile in an empty cell: 2 with 90% probability, otherwise 4. Do not spawn after an unchanged move. - Animate movement and merging without allowing rapid input to corrupt board state. Prevent arrow keys from scrolling the page. - Show score, a win message on reaching 2048, and Game Over only when no valid move remains. Provide New Game to reset board and score; allow continuing after a win. Verify: Play a short sequence of arrow-key moves and check that tiles slide, a valid move adds a tile, and any observed merge updates the score by its merged value. Use New Game and check that the board returns to two tiles with a reset score.
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
METRICS
Transcript · 21 messages
Build a playable 2048 game using HTML elements and CSS with a 4 by 4 board. Use HTML, CSS, and JavaScript as needed. Write it to `index.html` in the current working directory using your file tools. Inline your own CSS and JavaScript. Do not use external assets, CDNs, or network requests. No third-party libraries are provided. Required behavior: - Arrow keys slide tiles toward the selected edge. Adjacent equal tiles merge once per tile per move, and the score increases by the value of each new merged tile. - For example, moving [2, 2, 2, 2] left produces [4, 4, 0, 0], not [8, 0, 0, 0]. Moving [2, 2, 4, 0] left produces [4, 4, 0, 0]. These examples describe the move before spawning a new tile. - Start with two tiles. After a move that changes the board, spawn exactly one tile in an empty cell: 2 with 90% probability, otherwise 4. Do not spawn after an unchanged move. - Animate movement and merging without allowing rapid input to corrupt board state. Prevent arrow keys from scrolling the page. - Show score, a win message on reaching 2048, and Game Over only when no valid move remains. Provide New Game to reset board and score; allow continuing after a win. Verify: Play a short sequence of arrow-key moves and check that tiles slide, a valid move adds a tile, and any observed merge updates the score by its merged value. Use New Game and check that the board returns to two tiles with a reset score.
thinking
index.html (14081 bytes)Successfully wrote to index.html
thinking
{"action":"inspect","x":0,"y":0,"toX":0,"toY":0,"text":"","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":[],"dom":"twenty forty-eight\nA LITTLE GAME OF NUMBERS\nTHE CLASSIC PUZZLE\n2048.\n\nJoin the numbers and get to the 2048 tile.\n\nHOW TO PLAY\n\nUse your arrow keys to move the tiles. When two tiles with the same number touch, they merge into one.\n\n←\n↑\n↓\n→\nSCORE\n0\nBEST\n0\nNew Game\n2\n2\nCOMBINE TILES. REACH 2048.\nTAKE YOUR TIME ✳\nMade for a little break.\nONE MOVE AT A TIME","images":"attached"}
thinking
**Evaluating animation start** I’m noticing that the screenshot at the start of the animation shows tiny tiles. It looks like I need to move them around a bit to get everything in place properly. Ensuring that the animation starts smoothly is important to create a good flow. I wonder if adjusting the spacing or size of those tiles could help enhance the overall look and feel. Let’s keep refining!
{"action":"key","x":0,"y":0,"toX":0,"toY":0,"text":"ArrowLeft","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":[],"dom":"twenty forty-eight\nA LITTLE GAME OF NUMBERS\nTHE CLASSIC PUZZLE\n2048.\n\nJoin the numbers and get to the 2048 tile.\n\nHOW TO PLAY\n\nUse your arrow keys to move the tiles. When two tiles with the same number touch, they merge into one.\n\n←\n↑\n↓\n→\nSCORE\n0\nBEST\n0\nNew Game\n2\n2\nCOMBINE TILES. REACH 2048.\nTAKE YOUR TIME ✳\nMade for a little break.\nONE MOVE AT A TIME","images":"attached"}
{"action":"inspect","x":0,"y":0,"toX":0,"toY":0,"text":"","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":[],"dom":"twenty forty-eight\nA LITTLE GAME OF NUMBERS\nTHE CLASSIC PUZZLE\n2048.\n\nJoin the numbers and get to the 2048 tile.\n\nHOW TO PLAY\n\nUse your arrow keys to move the tiles. When two tiles with the same number touch, they merge into one.\n\n←\n↑\n↓\n→\nSCORE\n0\nBEST\n0\nNew Game\n2\n2\n2\nCOMBINE TILES. REACH 2048.\nTAKE YOUR TIME ✳\nMade for a little break.\nONE MOVE AT A TIME","images":"attached"}
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{"action":"key","x":0,"y":0,"toX":0,"toY":0,"text":"ArrowUp","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":[],"dom":"twenty forty-eight\nA LITTLE GAME OF NUMBERS\nTHE CLASSIC PUZZLE\n2048.\n\nJoin the numbers and get to the 2048 tile.\n\nHOW TO PLAY\n\nUse your arrow keys to move the tiles. When two tiles with the same number touch, they merge into one.\n\n←\n↑\n↓\n→\nSCORE\n0\nBEST\n0\nNew Game\n2\n2\n2\nCOMBINE TILES. REACH 2048.\nTAKE YOUR TIME ✳\nMade for a little break.\nONE MOVE AT A TIME","images":"attached"}
{"action":"inspect","x":0,"y":0,"toX":0,"toY":0,"text":"","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":[],"dom":"twenty forty-eight\nA LITTLE GAME OF NUMBERS\nTHE CLASSIC PUZZLE\n2048.\n\nJoin the numbers and get to the 2048 tile.\n\nHOW TO PLAY\n\nUse your arrow keys to move the tiles. When two tiles with the same number touch, they merge into one.\n\n←\n↑\n↓\n→\nSCORE\n4\nBEST\n4\nNew Game\n4\n2\n2\nCOMBINE TILES. REACH 2048.\nTAKE YOUR TIME ✳\nMade for a little break.\nONE MOVE AT A TIME","images":"attached"}
{"action":"click","x":968,"y":158,"toX":0,"toY":0,"text":"","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":[],"dom":"twenty forty-eight\nA LITTLE GAME OF NUMBERS\nTHE CLASSIC PUZZLE\n2048.\n\nJoin the numbers and get to the 2048 tile.\n\nHOW TO PLAY\n\nUse your arrow keys to move the tiles. When two tiles with the same number touch, they merge into one.\n\n←\n↑\n↓\n→\nSCORE\n0\nBEST\n4\nNew Game\n2\n2\nCOMBINE TILES. REACH 2048.\nTAKE YOUR TIME ✳\nMade for a little break.\nONE MOVE AT A TIME","images":"attached"}
thinking
{"path":"index.html","edits":[{"oldText":" if (over) showMessage('over');\n else if (reached && !won) { won = true; showMessage('wSuccessfully replaced 2 block(s) in index.html.
thinking
{"action":"reload","x":0,"y":0,"toX":0,"toY":0,"text":"","delta":0}Frame 1, +0ms
[Browser image supplied to model]
{"console":[],"dom":"twenty forty-eight\nA LITTLE GAME OF NUMBERS\nTHE CLASSIC PUZZLE\n2048.\n\nJoin the numbers and get to the 2048 tile.\n\nHOW TO PLAY\n\nUse your arrow keys to move the tiles. When two tiles with the same number touch, they merge into one.\n\n←\n↑\n↓\n→\nSCORE\n0\nBEST\n0\nNew Game\n2\n2\nCOMBINE TILES. REACH 2048.\nTAKE YOUR TIME ✳\nMade for a little break.\nONE MOVE AT A TIME","images":"attached"}
Created `index.html`. Checked arrow-key movement, tile spawning, a merge that increased the score by 4, and New Game resetting the board and score. The browser console showed no errors. Win and Game Over states were not verified through play.