A breakdown of a real ForgeGUI build - the exact prompts, why each one works, and how to write your own
Disclosure: I'm in ForgeGUI's creator partner program and get paid for content about it. Everything below is from real footage of the tool - no mockups.
Not long ago, "making a Roblox game" meant learning Luau, fighting Roblox Studio's toolbox, and watching a lot of tutorials before anything moved. Now you can open a chat box, type what you want in plain English, and watch it appear in Studio.
I wanted to see how far that actually goes, so this post walks through one complete build made with ForgeGUI: six prompts, in order, with what each one produced. If you've been searching "how to make a Roblox game with AI," this is the most concrete answer I can give you.
What is ForgeGUI?
ForgeGUI is an AI tool for game developers that generates assets from a text prompt. Its own tagline is "Generate any game asset just by chatting." For Roblox, it has a Roblox Studio plugin that pushes what you generate straight into your place, so you're not exporting and importing files by hand.
According to forgegui.com, it can generate:
- GUIs: inventory panels, HUDs, health bars, skill icons, buttons
- 3D assets, thumbnails and icons, exportable as PNG, ZIP and GLB
And as the build below shows, it also handles gameplay: a throwing mechanic, physics and camera behavior, all from prompts.
It also works beyond Roblox (the site lists UEFN, Unity, Unreal, Minecraft and mobile), and the site says 60K+ game developers use it.
The build: 6 prompts, in order
The starting point is an empty baseplate and a character. Every change after that is one sentence typed into ForgeGUI's prompt box. The first prompt is simply "Place a rock", and a rock appears next to the character. Then it gets interesting.
Prompt 2: "Make it so that I can grab and throw the rock"
This is the important one. It's not asking for a model - it's asking for a mechanic: pick-up, hold, throw. The result is a working grab-and-throw interaction: the character picks the rock up and throws it.
Why it works: it describes what the player should be able to do, not how to code it. You don't need to know what a ProximityPrompt or BodyVelocity is.
Prompt 3: "Make it 100 times cooler"
Yes, this is a real prompt, and it's my favorite. Instead of specifying effects one by one, it hands the creative call to the AI. The throw gets a charge-up power meter, an aiming line that shows where the rock will go, and a glowing effect on the throw.
Why it works: once a mechanic exists, vague "vibe" prompts are surprisingly effective - the AI already has something concrete to improve. Use them after the basics work, not as your first prompt.
Prompt 4: "Place a dummy so I can practice"
Now there's a target. Note the phrasing again: it says why the dummy exists ("so I can practice"), which gives the AI context about how it should be placed and used.
Prompt 5: "Make me an old design map"
The baseplate becomes a whole street: cobblestones, classic building facades, street lamps. One sentence, a complete environment change - and the mechanics from the earlier prompts still work in it.
Prompt 6: "Make it so that when I throw the rock, it follows it"
The finisher: a camera mode. When you throw, the camera rides along with the rock down the street (that's the GIF at the top of this post). Camera scripting is one of the fiddliest things for new Roblox devs, and here it's one sentence.
How to write prompts that actually work
Looking at this build, the prompts that worked best follow a few simple rules:
- One change per prompt. Every prompt above does exactly one thing. If something breaks, you know which step caused it.
- Describe what the player experiences. "Make it so that I can grab and throw the rock" beats any technical description.
- Give the reason. "Place a dummy so I can practice" tells the AI how the thing will be used.
- Build the mechanic first, then style it. "Make it 100 times cooler" works because the throw already existed.
- Save the big swings for last. "100 times cooler" and a whole new map land best once the basics already work.
A good template for your first session:
Core mechanic → a target or goal → an environment → a camera or feel upgrade → "make it 100 times cooler"
Is ForgeGUI free?
There is a free tier, and new accounts get starter credits, so you can try a build like the one above before paying anything. It runs on credits: different kinds of generations cost different amounts, and you can earn more credits through sign-up bonuses, referrals, or a subscription (which you can cancel any time).
Two things worth knowing before you start:
- You own what you make. ForgeGUI grants full commercial use rights, so you can use, modify, distribute or sell generated assets.
- Free-tier generations may appear in ForgeGUI's public Asset Catalog unless you opt out - check that setting if you're working on something you want to keep private.
Do you still need to learn to code?
Honestly: for getting a playable idea on screen, no. In the build above, every change came from a typed prompt, not from writing Luau.
But if you want to ship something big, understanding what the AI generated will help you debug it, tune it, and combine systems. The best way to use a tool like ForgeGUI is as a fast prototyper and a teacher: generate the mechanic, then open the script it made and see how it works. You'll learn Luau faster that way than from an empty script.
FAQ
Can you really make a Roblox game with AI?
Yes. A playable prototype with mechanics, a map and camera work came from six plain-English prompts in the build above. Polishing and publishing a full game still takes your time and judgment.
Does ForgeGUI work inside Roblox Studio?
Yes. It has a Roblox Studio plugin that pushes generated assets directly into Studio.
What can ForgeGUI make?
Gameplay behavior, GUIs (HUDs, inventories, health bars, buttons, icons), 3D assets and thumbnails, with exports as PNG, ZIP and GLB.
Is it only for Roblox?
No. ForgeGUI lists Roblox Studio, UEFN, Unity, Unreal Engine, Minecraft and mobile.
Try it
If you want to recreate the rock-throwing build, open a fresh baseplate and type the six prompts above in order. Start at forgegui.com (free starter credits).
I post these builds as short videos on TikTok - @ash.robloxdev - and YouTube - @ash.robloxdev. The rock-throwing build from this post: watch it here. Tell me what I should build next.
Originally published on Medium.
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