How to Vibecode Your First Roblox Game in 10 Minutes (with Claude)

Go to promptblox.ai/create and click the email magic link button. Enter your email, click the link we send you, and you're in. No password, no credit card. Your first generation is free.

You'll land on a chat panel next to a 3D preview pane. That's the whole interface — no menus to learn.

Type what you want in the chat. For a first game, I recommend something concrete and visual. Copy one of these starter prompts:

• Obby (easiest first game): "A neon cyberpunk obby with laser gates, glowing jump pads, and a boss platform at the end."
• Tycoon (most replay value): "A candy factory tycoon where players buy machines, produce lollipops and chocolate bars, and sell them for coins. Pastel colors."
• Paintball (most fun with friends): "A snowy mountain paintball arena with wooden cabins for cover, two spawn points, and a capture-the-flag mode."
• Rage obby (viral potential): "A brutal rage obby in a lava dungeon with tiny platforms, spinning blades, and checkpoints every three stages."

Claude reads the prompt and routes it to the matching template (obby, tycoon, paintball). You don't have to pick a category — the model infers it.

Within about fifteen seconds you'll see three concept art images. These are AI-generated thumbnails showing what your game could look like: color palette, materials, mood. Pick the one that matches your vision.

This step is more important than it seems. The concept image becomes the reference that the mesh pipeline uses later to texture your props. Picking a vibrant option now means vibrant meshes later. Picking a moody option gets you moody meshes.

If none of the three feel right, type back: "More pastel, less neon" or "Make them darker and spookier" and Claude regenerates the concepts.

Once you pick a concept, the real build starts. You'll see a live React Three Fiber preview assemble the game in real time:

• Zone-by-zone platform layout
• Themed props (candy boxes, laser gates, snow cabins)
• Kill bricks, checkpoints, spawn points
• Sky, lighting, and ambient color based on the theme

Expected timing: about 60 seconds for the structural pass, then another 60 to 90 seconds for themed meshes to replace the grey primitives. You can start walking through the game as soon as the structural pass lands — meshes swap in progressively.

Click the Playbutton in the preview panel. You'll get a first-person camera and can walk around your game directly in the browser. WASD to move, space to jump, mouse to look. This is the real layout — not a thumbnail.

Take a minute to play through it. Are the jumps fair? Does the theme feel consistent? Does the tycoon economy feel rewarding? The things you notice while playing are exactly what you'll refine next.

Go back to the chat panel and describe what you want changed. One thing at a time works best. Examples:

• "Make zone 3 harder — smaller platforms and a spinning blade."
• "Add more cover in the middle of the arena."
• "Dim the lighting — it's too bright."
• "Swap the chocolate zone for a gummy bear zone."
• "Speed up the conveyor belts."

Claude regenerates only the affected zones, not the whole game, so refinement is fast (10-30 seconds) and doesn't reset your other changes.

When the game feels good, you have two paths:

• Publish directly to Roblox — click Publish, connect your Roblox account via OAuth, pick a title and thumbnail, and your game goes live. No Studio required.
• Download the .rbxlx file — click Download, get a .rbxlx file. Open it in Roblox Studio on a Windows or Mac machine to customize further, then publish from Studio.

Most first-time vibecoders go the direct publish route — it's the whole point of not needing Studio.

Every published PromptBlox game gets a shareable link with an Open Graph preview, so when you paste it into Discord or TikTok, it unfurls with your game's concept image. Copy the link, send it to three friends, get playtesting feedback, iterate.

If you want people to find your game organically on Roblox, pay attention to the title and description on the Roblox game page. Specific words like "100 stages," "neon theme," and "hard obby" get way more search traffic than generic names.