I Put Gemini Canvas to the Test: 3 Wild Builds in One Day

Google quietly rolled out Gemini Canvas, and on paper it looks like the next big leap for building with AI.Instead of just reading the release notes, I spent a day pushing it to its limits.

I tried three very different builds inside Canvas:

✅ Cloned Gemini itself in a single prompt (shockingly, it worked almost perfectly)
🎮 Built a Mario-style game from scratch
🎙️ Created an audio-transcription tool powered by Gemini AI

Here’s what stood out:

How far “one-prompt builds” have come — and where they still break
The kinds of apps Canvas handles well vs. where it struggles
Why this might reshape how we think about “vibe coding” tools going forward

I recorded the whole process — successes, dead ends, and surprises — so you can see exactly how it performs without spending hours testing it yourself.

If you’ve tried Canvas already, I’d love to know what you built and where it impressed (or disappointed) you.

Shubham

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