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Action · Roguelike · made with Claude

Blockzilla

Play a giant kaiju smashing New York while evolving new powers each run.

Plays in your browser Phone friendly 2026 Vibe Coding Game Jam: rank 23 of 945
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Blockzilla cover image Play on blockzilla.io ↗ Opens on the creator's site. Come back here to rate it.
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About Blockzilla

Blockzilla makes you the destructive force instead of humanity's defender. You play a giant kaiju rampaging through a blocky New York City, stomping through streets, wrecking buildings and fighting off whatever tries to stop you.

The loop takes the auto-attacking, upgrade-stacking structure of Vampire Survivors and points it at the city-wrecking fantasy of the arcade classic Rampage. The creator says the idea came from childhood memories of playing Rampage and a wish to turn that into a roguelike power fantasy. Built with Claude Code on Three.js, it placed 23rd of 945 at Vibe Jam 2026.

It is a roguelite, so each run starts over. Along the way you pick up new abilities and grow stronger, and those evolving powers are the main reward for surviving longer.

How it was made

Most of the code was written by AI. Source: Vibe Jam 2026 submission form.

Evidence: the creator's own account.

AI provider
Anthropic
AI tools
Claude Code
Engine
Three.js
Players
Single player
Make one like itClaude Code game development: a practical guide

Screenshots

  • Blockzilla screenshot 1
  • Blockzilla screenshot 2

Questions about Blockzilla

Is Blockzilla free to play?

Yes. Blockzilla runs in your web browser at no cost, with no download or account needed.

Which AI was used to make Blockzilla?

Blockzilla was made with Claude Code and Claude. Most of the code was written by AI, according to the Vibe Jam 2026 submission form.

Can I play Blockzilla on my phone?

Yes. Blockzilla supports mobile browsers.

Who made Blockzilla?

Blockzilla was made by markfersh. See their profile on GamesByAI for their other games.

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