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Mario-style platformer · seed-2.0-code

Using the pre-provided phaser.min.js (global Phaser), build a playable side-scrolling platformer in the classic Mario style: run and jump across scrolling platforms, stomp enemies, collect coins, and reach a goal flag. Use ONLY procedurally generated graphics, no external image or audio assets.

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user

Using the pre-provided phaser.min.js (global Phaser), build a playable side-scrolling platformer in the classic Mario style: run and jump across scrolling platforms, stomp enemies, collect coins, and reach a goal flag. Use ONLY procedurally generated graphics, no external image or audio assets.

assistant
thinking
I need to build a side-scrolling platformer game using Phaser.js with only procedural graphics. Let's plan this out:

1. Set up the basic HTML structure with Phaser included
2. Create a Phaser game configuration
3. Implement game states/scenes:
   - Boot/Loading scene
   - Menu scene
   - Game scene (main gameplay)
   - Game Over scene
   - Win scene

4. Key game elements to implement:
   - Player character with movement and jumping
   - Procedurally generated platforms
   - Scrolling camera
   - Enemies that can be stomped
   - Collectible coins
   - Goal flag
   - Score system
   - Procedural graphics for all elements

Let me start by setting up the basic HTML file and then implement each part step by step.

I'll build a complete side-scrolling platformer game using Phaser.js with procedural graphics only. Let's start by creating the game file.

write /tmp/ws/index.html (31345 bytes)
toolResult

Successfully wrote 31345 bytes to /tmp/ws/index.html

assistant
thinking
Now let me verify the file was created properly by checking its contents.

Let me verify the game file was created properly by checking its contents and testing it.

bash {"command":"ls -la /tmp/ws/"}
toolResult

total 1188 drwxr-sr-x. 2 node node 45 Aug 13 01:32 . drwxrwsrwx. 3 root node 16 Aug 13 01:30 .. -rw-r--r--. 1 node node 31349 Aug 13 01:32 index.html -rw-r--r--. 1 node node 1181917 Aug 13 01:30 phaser.min.js

assistant
thinking
Great, the file is present. Let me check if it's correctly formatted and if we need to make any adjustments.

Actually, the game is complete and should be playable. Let me just verify that all the features are included:

1. Procedural player sprite (Mario-style) ✓
2. Procedural enemy sprites (Goomba-style) ✓  
3. Procedural coins ✓
4. Procedural goal flag ✓
5. Procedural platforms (ground and floating) ✓
6. Background elements (clouds, hills) ✓
7. Player movement (left/right with arrow keys, jump with space or up) ✓
8. Running (shift key for faster movement) ✓
9. Stomp enemies from above ✓
10. Collect coins with particle effects ✓
11. Score system ✓
12. Lives system ✓
13. Game over and win states ✓
14. Restart functionality ✓
15. Camera follows player ✓
16. Touch controls for mobile ✓

The game is complete and should be fully playable. Let me start a local server to test it.

Let me start a local web server so you can play the game:

bash {"command":"cd /tmp/ws && python3 -m http.server 8000"}
toolResult

/bin/bash: line 1: python3: command not found Command exited with code 127

assistant
thinking
Python3 is not available. Let me try using Node.js to start a simple HTTP server instead.

Let me try using Node.js to start a server:

bash {"command":"cd /tmp/ws && node -e \"\nconst http = require('http');\nconst fs = require('fs');\nconst path = require('path');\n\nconst PORT

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

modelseed-2.0-code
vendorByteDance · Seed
harnesspi-agent
generated2026-08-13

EVALUATION

1/5 broken

Entirely black canvas across all frames; JS error (quadraticCurveTo) crashed rendering, no game visible.

off-prompt

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.

idle motion0.0%
on click0.0%
on drag0.0%
on wheel0.0%
on enter + space0.0%
on arrow keys0.0%
on w/a/s/d0.0%
frame spread7.4 / 255
console errors0
js errors
  • graphics.quadraticCurveTo is not a function

METRICS

runtime1200.2s
tokens in34k
tokens out9.2k
cached24k
cost / run$0.0325