The Rise of Kiro and the Roblox Opportunity
The developer community embraced Kiro with unprecedented enthusiasm. In just 3 days of its public preview launched on July 14, over 100,000 developers downloaded Kiro. That number has more than doubled in 90 days, showcasing the massive demand for AI-powered development tools with Agentic-IDE that actually understands how developers work.
The best news? There's no more waitlist. Anyone can now download Kiro and get started with 500 free bonus credits—that's equivalent to 50% of the Kiro Pro plan. It's the perfect opportunity to explore how AI can transform your development workflow.
And speaking of opportunities, let's talk about Roblox.
The Roblox Phenomenon
As of mid-2025, Roblox has approximately 111.8 million daily active users and over 85.3 million in recent reports, with users spending billions of hours on the platform annually. The platform boasts over 6.7 million user-created "experiences," and in 2024, developers earned over $701 million from their creations.
The user base is geographically diverse, with a growing older demographic alongside its traditional younger audience. This isn't just a gaming platform—it's a thriving economy where creators can turn their ideas into real income.
But here's the challenge: building a professional-grade Roblox game requires juggling multiple systems, understanding Lua/Luau, managing complex project structures, and following best practices. That's where Kiro's spec-driven development approach changes everything.
What is Spec-Driven Development?
Traditional AI assisted development with Vibe coding often goes like this: you have an idea, you start coding, you realize you forgot something, you refactor, you add features, things get messy, and before you know it, your codebase is a tangled mess.
Spec-driven development flips this on its head. You start with a clear specification—a prompt to generate structured requirements document that defines what you want to build, how it should work, and what the end result should look like. Then, Kiro uses this spec to guide the entire development process, with design and tasks ensuring consistency, completeness, and quality from start to finish powered by its steering, agent hooks and MCP capabilities.
Building an Educational Math Game: A Real Example
Let me show you how I used Kiro to build a complete Roblox educational math game—from concept to deployment—using spec-driven development. I talked about this game briefly in my livestream with Darko on the Kiro bi-weekly show.
The Initial Prompt
Instead of diving straight into code, I started with a clear, structured prompt. Here's the template I used:
Create an <educational math game> for Roblox that <teaches addition through
engaging gameplay with progressive difficulty>. The project should be built
using Rojo with Cargo for professional external development workflow, proper
version control, and organized code structure.
Core Features:
- <Progressive difficulty system that adapts from simple (1-9) to complex
(up to 99) addition problems>
- <Multiple game modes: Classic, Blitz, Zen, Survival, Time Attack>
- <Power-up system with 5 power-ups: Time Freeze, Double Points, Skip,
Extra Time, Hint Mode>
- <Achievement system with 12+ achievements>
- <Enhanced scoring with speed bonus, streak multipliers, combo system>
- <Visual and audio effects: particle explosions, floating text, dynamic music>
- <Real-time leaderboards>
- <Data persistence for player stats and achievements>
Technical Requirements:
- Use Rojo for external development and live sync with Roblox Studio
- Organize code following Roblox service-based structure
- Implement <game logic, answer validation, data management> on server
- Implement <UI, visual effects, user input handling> on client
- Create SharedModules for <MathUtils, PowerUpManager, EffectsManager,
SoundManager, GameModeManager, ComboManager, RewardsManager, MascotManager>
That's it. One clear prompt with placeholders for the specific features I wanted.
What Kiro Generated
From this single prompt, Kiro created:
1. Complete Project Structure
roblox-additive-game/
├── src/
│ ├── ReplicatedStorage/
│ │ ├── GameConfig.lua
│ │ └── SharedModules/
│ │ ├── MathUtils.lua
│ │ ├── PowerUpManager.lua
│ │ ├── EffectsManager.lua
│ │ ├── SoundManager.lua
│ │ ├── GameModeManager.lua
│ │ ├── ComboManager.lua
│ │ ├── RewardsManager.lua
│ │ └── MascotManager.lua
│ ├── ServerScriptService/
│ │ ├── GameManager.server.lua
│ │ └── PlayerDataManager.server.lua
│ ├── StarterGui/GameUI/
│ │ ├── MainMenu.lua
│ │ ├── GameScreen.lua
│ │ ├── GameModeSelector.lua
│ │ ├── PowerUpShop.lua
│ │ └── DailyRewardsUI.lua
│ └── StarterPlayerScripts/
│ └── ClientController.client.lua
├── build/
│ └── additive-game.rbxl
├── default.project.json
└── README.md
2. Fully Functional Game Systems
- All 5 game modes working with unique mechanics
- Complete power-up system with purchase and activation logic
- 12 achievements with progress tracking
- Real-time scoring with multipliers and combos
- Visual effects using particle systems
- Dynamic audio system
- Data persistence using Roblox DataStores
3. Professional Development Setup
- Rojo configuration for external development
- Live sync capability with
rojo serve - Build pipeline with
rojo build - Proper separation of client and server code
- Security-focused with server-side validation
4. Comprehensive Documentation
- README with setup instructions
- Steering documents for best practices
- Code comments explaining complex logic
- Deployment guide
The Kiro Advantage: Steering Documents
One of Kiro's most powerful features is steering documents. These are markdown files that automatically guide Kiro's code generation based on context.
For this project, Kiro created:
tech.md - Technology stack and build system guidelines
- Platform: Roblox Studio & Roblox Engine
- Language: Lua/Luau
- Build System: Rojo
- Common commands and architecture patterns
structure.md - Project organization rules
- Root directory layout
- Source code organization by Roblox services
- Naming conventions
- Module organization patterns
product.md - Product overview and features
- Core features and value propositions
- Target audience
- Key game mechanics
lua-best-practices.md - Lua/Luau coding standards
- Naming conventions
- Performance best practices
- Roblox-specific patterns
- Error handling
- Security considerations
These steering documents ensure that every piece of code Kiro generates follows the same standards, uses the same patterns, and maintains consistency throughout the project.
The Development Experience
Traditional Approach
- Set up Roblox Studio project
- Figure out Rojo configuration
- Create folder structure manually
- Write GameConfig.lua
- Implement MathUtils module
- Build game logic
- Create UI components
- Add visual effects
- Implement data persistence
- Debug and refactor
- Write documentation
Time estimate: 2-3 weeks for an experienced developer
Kiro Spec-Driven Approach
- Write clear prompt with specifications
- Review generated code structure
- Test in Roblox Studio
- Iterate on specific features if needed
Time estimate: 2-3 hours
Key Takeaways
1. Start with Clarity
The better your initial prompt, the better the output. Use the template structure with clear placeholders for your specific features.
2. Leverage Steering Documents
Let Kiro create steering documents that guide all future development. This ensures consistency even as you iterate.
3. Use Professional Tools
Rojo + Kiro is a powerful combination. External development with version control beats working directly in Roblox Studio.
4. Focus on What Matters
Instead of writing boilerplate and setting up infrastructure, spend your time on game design, balancing, and player experience.
5. Iterate Quickly
With Kiro, you can test ideas rapidly. Don't like a game mode? Adjust the spec and regenerate. Want to add a new power-up? Update the prompt and let Kiro handle the implementation.
The Results
The final game includes:
- ✅ 5 fully functional game modes
- ✅ 5 power-ups with purchase system
- ✅ 12 achievements with tracking
- ✅ Real-time leaderboards
- ✅ Particle effects and animations
- ✅ Dynamic audio system
- ✅ Data persistence
- ✅ Professional UI
- ✅ Comprehensive documentation
- ✅ Production-ready code
All from a single well-structured prompt.
Getting Started with Kiro for Roblox Development
Ready to build your own Roblox game with Kiro? Here's how to get started:
1. Download Kiro
Visit kiro.dev and download the IDE. No waitlist, and you get 500 free credits to start.
2. Install Prerequisites
# Install Rust and Cargo
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
# Install Rojo
cargo install rojo
3. Install Roblox Studio
Download from roblox.com/create and install the Rojo plugin.
4. Use the Template
Copy the prompt template from this article, fill in your game idea, and let Kiro do the heavy lifting.
5. Iterate and Deploy
Test in Studio, iterate on features, and publish to Roblox when ready.
The Future of Game Development
With 111.8 million daily active users and $701 million paid to developers in 2024, Roblox represents a massive opportunity. But the barrier to entry has always been the technical complexity.
Kiro's spec-driven development approach democratizes game creation. You don't need to be an expert in Lua, understand Roblox's service architecture, or know how to set up Rojo. You just need a clear idea and the ability to describe what you want to build.
The 100,000+ developers who joined Kiro in the first 3 days understood this. They saw that AI-powered development isn't about replacing developers—it's about amplifying their creativity and removing the tedious parts of coding.
Your Turn
The template is ready. The tools are available. The platform has 111.8 million daily users waiting to play your game.
What will you build?
Resources:
- Download Kiro - Get 500 free credits
- Rojo Documentation
- Roblox Creator Hub
- Example Project - Full source code
Have you built something with Kiro? Share your experience in the comments below!