Flappy Bird (2D/3D)

Also searched as: 3d flappy bird ai coding test

Games4 posts on aivs.tv

The Flappy Bird (2D/3D) test, run by 6 models across 4 posts on X. Watch each result, then compare what the posts report below.

By model

4 posts2 solo · 2 side-by-side

Not a controlled comparison: prompts, tools and time differ.

Results by model

Flappy Bird (2D/3D): one row per model and post, with only what each post reports
ModelPostTimeCostTokensAuthor’s verdictOriginal
Claude Fable 5One-shot Flappy Bird with scores@AiHubMix—$0.55——X post
Claude Fable 5Flappy Bird@bridgebench————X post
Claude Opus 5Flappy Bird, 3 models with costs@noclipepe—$0.253——X post
Claude Sonnet 4Flappy Bird in pure HTML/CSS/JS@scaling01————X post
DeepSeek V4 Pro 0813One-shot Flappy Bird with scores@AiHubMix—$0.02—Author’s pickX post
GPT-5.6 SolFlappy Bird, 3 models with costs@noclipepe—$0.15——X post
Qwen 3.8 MaxFlappy Bird, 3 models with costs@noclipepe—$0.0248——X post

Only numbers stated in each post. “—” means the post doesn’t say.

Summary

4 posts on X run this test with DeepSeek V4 Pro 0813, Claude Fable 5, Qwen 3.8 Max, GPT-5.6 Sol, Claude Opus 5 and Claude Sonnet 4. @AiHubMix, @noclipepe report per-model numbers (see the table). According to @noclipepe, Qwen matched GPT on gameplay and UX/UI for 6x less. (The author’s view.) According to @bridgebench, the best UI they have ever seen from an AI model; no other model was close. (The author’s view.)

Who won where

2

About this test

A small game that exposes physics tuning and collision bugs quickly.

Canonical prompt

Build a fully playable 3D Flappy Bird game in a single HTML file.

Origin: @ivanainai

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