{"id":291,"date":"2026-04-15T05:07:27","date_gmt":"2026-04-15T05:07:27","guid":{"rendered":"https:\/\/blog.nilo.io\/vibe-coding-tutorial\/"},"modified":"2026-07-28T05:15:12","modified_gmt":"2026-07-28T05:15:12","slug":"vibe-coding-tutorial","status":"publish","type":"post","link":"https:\/\/www.nilo.io\/articles\/vibe-coding-tutorial","title":{"rendered":"Vibe Coding Tutorial: Build Your First 3D Roblox Game"},"content":{"rendered":"<p><em>Written by: Nuno Leiria, Founder &amp; CEO @ Nilo | Last updated: July 27, 2026<\/em><\/p>\n<h2 id=\"key-takeaways\">What You Will Learn in This Vibe Coding Guide<\/h2>\n<ul>\n<li>Vibe coding lets you describe a 3D Roblox obby in plain language and watch AI generate working code and assets in real time.<\/li>\n<li>Start with a single-sentence brief that captures the smallest fun core loop before any prompting begins.<\/li>\n<li>Iterate quickly by prompting one change at a time, testing instantly in the live browser engine, and refining based on real-time feedback.<\/li>\n<li>Export Roblox-ready assets with automatic LOD optimization that meets Roblox polygon limits, so you skip extra cleanup.<\/li>\n<li>When you are ready to try this flow yourself, <a href=\"http:\/\/nilo.io\/?utm_source=aga&amp;utm_medium=blog&amp;utm_campaign=aga_content\" target=\"_blank\">jump into Nilo\u2019s open beta and start building your first obby for free<\/a>.<\/li>\n<\/ul>\n<h2>Start Small: Vibe Coding for Your First Obby<\/h2>\n<p>The biggest mistake beginners make is starting too big. <a href=\"https:\/\/summerengine.com\/blog\/write-a-game-with-ai\" target=\"_blank\" rel=\"noindex nofollow\">A one-sentence brief that describes the smallest fun core loop works best before any prompting begins<\/a>. For an obby, that might be: \u201cA player jumps across floating platforms over lava and reaches a finish flag.\u201d<\/p>\n<figure style=\"text-align: center\"><img decoding=\"async\" src=\"https:\/\/cdn.aigrowthmarketer.co\/1775498558906-2d7a57101ca9.png\" alt=\"Obby course generated through Nilo, a browser-based 3D creation platform built for Roblox creators and game developers\" style=\"max-height: 500px\" loading=\"lazy\"><figcaption><em>Obby course generated through Nilo, a browser-based 3D creation platform built for Roblox creators and game developers<\/em><\/figcaption><\/figure>\n<h3>Step 1: Describe Your Obby in Plain Language<\/h3>\n<p>Open Nilo in your browser, with no installation needed. In the world editor, type your one-sentence concept into the natural language code editor, which lets you create by just talking, texting, or sending images to the AI. Be specific and include the theme, the obstacles, and the win condition. \u201cA lava-themed obby with five floating stone platforms, a spinning fire trap on platform three, and a golden trophy at the end\u201d gives the AI far more to work with than \u201cmake an obby.\u201d<\/p>\n<p><a href=\"https:\/\/gamineai.com\/blog\/how-to-build-a-simple-game-using-ai-prompts-full-guide\" target=\"_blank\" rel=\"noindex nofollow\">Strong prompts include context, constraints, and expected output format<\/a>. Think about style such as low poly, cartoon, or realistic, plus scale and mood. A clear description helps the first output land much closer to what you have in mind.<\/p>\n<h3>Step 2: Generate Core Assets with Text, Sketch, or Image Prompts<\/h3>\n<p>Nilo\u2019s AI text-to-3D generation lets you type what you want, such as \u201ccracked stone platform,\u201d \u201cspinning fire ring,\u201d or \u201cgolden trophy cup,\u201d and get a 3D model in seconds. If you prefer drawing, use the sketch-to-3D pipeline: draw a rough shape in 2D, refine it with AI, and drag it into your world. You can also upload a reference image and Nilo will generate a 3D asset based on it.<\/p>\n<figure style=\"text-align: center\"><img decoding=\"async\" src=\"https:\/\/cdn.aigrowthmarketer.co\/1775498504409-2166b6c2f713.png\" alt=\"Assets and world generated through Nilo, a browser-based 3D creation platform built for Roblox creators and game developers\" style=\"max-height: 500px\" loading=\"lazy\"><figcaption><em>Assets and world generated through Nilo, a browser-based 3D creation platform built for Roblox creators and game developers<\/em><\/figcaption><\/figure>\n<p>Nilo connects multiple AI model providers, including Meshy, Tripo, and Cartwheel, behind one interface, so you get strong results without choosing models yourself. As one builder put it in Nilo\u2019s February 2026 survey: \u201cThere are no limits on what you can create, just type, draw or add in an image and you can generate, rig, customise and place a fully 3D model within minutes.\u201d<\/p>\n<h3>Step 3: Iterate with Real-Time Feedback Inside the Browser Engine<\/h3>\n<p>Nilo\u2019s game-engine-first approach separates it from general vibe coding tools like Replit or Cursor. Every change you prompt appears instantly in a live 3D world with real physics running. You are not waiting for a page reload or a code compile, you see the platform appear, the trap spin, and the physics react in real time.<\/p>\n<figure style=\"text-align: center\"><img decoding=\"async\" src=\"https:\/\/cdn.aigrowthmarketer.co\/1775498576333-cc4147ffb5c1.png\" alt=\"Characters and world generated through Nilo, a browser-based 3D creation platform built for Roblox creators and game developers\" style=\"max-height: 500px\" loading=\"lazy\"><figcaption><em>Characters and world generated through Nilo, a browser-based 3D creation platform built for Roblox creators and game developers<\/em><\/figcaption><\/figure>\n<p><a href=\"https:\/\/summerengine.com\/blog\/write-a-game-with-ai\" target=\"_blank\" rel=\"noindex nofollow\">A simple loop works well here: write one change, play to verify the exact outcome, then write the next change only after confirmation<\/a>. If something looks wrong, describe the symptom in plain language, such as \u201cthe platform is floating too high,\u201d and Nilo adjusts it. You skip error messages and stack traces and stay focused on how the game feels.<\/p>\n<h2>Make Your Vibe-Coded Game Playable<\/h2>\n<h3>Step 4: Add Physics, Controls, and Win\/Lose Conditions with Prompts<\/h3>\n<p>Once your platforms and assets are placed, you can make the obby playable. Type prompts like \u201cadd a player character that can jump and run,\u201d \u201cmake platform three spin every two seconds,\u201d or \u201cif the player touches the lava, restart from the beginning.\u201d Nilo\u2019s code editor, the vibe coding interface, translates these into working game logic instantly.<\/p>\n<figure style=\"text-align: center\"><img decoding=\"async\" src=\"https:\/\/cdn.aigrowthmarketer.co\/1775498489815-fadb26f77978.png\" alt=\"Characters and world generated through Nilo, a browser-based 3D creation platform built for Roblox creators and game developers\" style=\"max-height: 500px\" loading=\"lazy\"><figcaption><em>Characters and world generated through Nilo, a browser-based 3D creation platform built for Roblox creators and game developers<\/em><\/figcaption><\/figure>\n<p>You can also see and tinker with the actual code variables. Change \u201cspeed = 2\u201d to \u201cspeed = 20\u201d and watch your character sprint. It feels like right-clicking \u201cView Source\u201d on a webpage, but for your game. This helps you start learning real programming concepts without it feeling like homework.<\/p>\n<p>Nilo\u2019s built-in physics simulation runs in real time, so everything is interactive and dynamic by default. Platforms collide, characters fall, and traps react. You do not need to wire up collisions manually or write physics code from scratch.<\/p>\n<h3>Step 5: Playtest with Friends Using a Shareable Link<\/h3>\n<p>Nilo supports real-time multiplayer creation. Share a URL and your friends can jump into your world instantly on desktop or mobile to playtest, build alongside you, or just run through the obby. They do not need accounts, downloads, or setup.<\/p>\n<figure style=\"text-align: center\"><img decoding=\"async\" src=\"https:\/\/cdn.aigrowthmarketer.co\/1775498523335-4f1ad3fb5e04.png\" alt=\"World generated through Nilo, a browser-based 3D creation platform built for Roblox creators and game developers\" style=\"max-height: 500px\" loading=\"lazy\"><figcaption><em>World generated through Nilo, a browser-based 3D creation platform built for Roblox creators and game developers<\/em><\/figcaption><\/figure>\n<p>This turns creation into a social, fast, and fun experience. You can watch a friend attempt your obby in real time, see where they get stuck, and prompt a fix immediately. <a href=\"https:\/\/gamineai.com\/blog\/how-to-build-a-simple-game-using-ai-prompts-full-guide\" target=\"_blank\" rel=\"noindex nofollow\">Testing with real players and tracking confusion points, difficulty spikes, and control clarity helps you improve a game quickly<\/a>.<\/p>\n<h3>Step 6: Use the Built-In LOD System to Meet Roblox Limits<\/h3>\n<p>Roblox enforces strict performance limits, often around 10,000 to 20,000 polygons per mesh. Many builders hit a second wall here, because they have built something great that is too heavy to export. Nilo\u2019s real-time LOD, or level of detail system, automatically adjusts the polygon count of your 3D models on the fly.<\/p>\n<p>Use the LOD slider to reduce polygon counts until your assets meet Roblox requirements. Nilo keeps polycount in a range where models work directly in Roblox Studio and other platforms without extra steps. You stop stressing about triangle counts and laggy unions. The engine handles optimization and you stay focused on building.<\/p>\n<p><a href=\"http:\/\/nilo.io\/?utm_source=aga&amp;utm_medium=blog&amp;utm_campaign=aga_content\" target=\"_blank\">Start optimizing your Roblox assets with Nilo\u2019s automatic LOD system and join the open beta free<\/a>.<\/p>\n<h2>Vibe Coding Tutorial 2026: From Browser to Roblox<\/h2>\n<h3>Step 7: Export Directly to Roblox Studio as Roblox-Ready Assets<\/h3>\n<p>When your obby feels ready, click Export. Nilo generates a Roblox-ready file in FBX, OBJ, STL, or glTF format, already rigged, animated, and optimized, that you import directly into Roblox Studio. You skip Blender cleanup, manual retopology, and long chains of tools.<\/p>\n<p>Characters can be rigged with one click, a process that normally takes days in professional tools, and animated with a text prompt. You type what you want a character to do and it works. Animations are Mixamo compatible and export with the model, so work that used to take hours now fits into minutes.<\/p>\n<p>Nilo\u2019s February 2026 survey of builders found that <strong>93% would recommend Nilo to a friend<\/strong> and <strong>82% rated their experience as \u201cAwesome\u201d or \u201cGood.\u201d<\/strong> Builders described the speed difference clearly: \u201cI do not have to spend hours on 3D modeling the simplest things, now I can use Nilo and do it in 15 seconds.\u201d<\/p>\n<h3>Fixing Common Vibe Coding Problems<\/h3>\n<p>Three issues come up often for builders using vibe coding for 3D games, and each has a straightforward fix.<\/p>\n<p><strong>Unclear prompts producing unexpected results.<\/strong> <a href=\"https:\/\/gamineai.com\/blog\/how-to-build-a-simple-game-using-ai-prompts-full-guide\" target=\"_blank\" rel=\"noindex nofollow\">Vague prompts without constraints are the most common mistake in AI-assisted game creation<\/a>. Instead of \u201cadd a trap,\u201d try \u201cadd a spinning red spike ring on platform three that rotates every 1.5 seconds.\u201d<\/p>\n<p><strong>Iteration bottlenecks.<\/strong> <a href=\"https:\/\/summerengine.com\/blog\/write-a-game-with-ai\" target=\"_blank\" rel=\"noindex nofollow\">Change one thing at a time and verify it works before moving to the next prompt<\/a>. Stacking multiple changes in one prompt makes it harder to see what went wrong if the output is off.<\/p>\n<p><strong>Export compatibility issues.<\/strong> If a rigged model behaves unexpectedly in Roblox Studio, such as movement causing unintended deformation or pivot errors on accessories, check that the LOD slider has reduced the mesh to within Roblox\u2019s polygon cap before exporting. Nilo\u2019s export pipeline targets Roblox\u2019s requirements, but assets that exceed the polygon limit can still cause import errors.<\/p>\n<h2>How Nilo\u2019s Game-Engine Approach Compares to General Vibe Coding Tools<\/h2>\n<p>Most vibe coding tutorials focus on tools like Cursor, Replit, or Claude, which act as general coding assistants that can generate web apps or simple browser games. These tools are not built for 3D game creation, Roblox export, or real-time collaborative building. The table below compares Nilo with Cursor and Replit across four key areas that shape your ability to build, test, and ship a 3D Roblox game directly from your browser.<\/p>\n<table>\n<thead>\n<tr>\n<th>Feature<\/th>\n<th>Nilo<\/th>\n<th>Cursor<\/th>\n<th>Replit<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>3D game engine depth<\/td>\n<td>Custom C++ physics engine, WebAssembly, WebGPU, full 3D world with real-time physics<\/td>\n<td>No game engine, generates code for existing engines or web stacks<\/td>\n<td><a href=\"https:\/\/chierhu.medium.com\/ai-coding-tools-for-video-game-development-a-first-principles-analysis-of-what-actually-works-90dfa10edd13\" target=\"_blank\" rel=\"noindex nofollow\">Supports browser-based prototypes via URL deployment, suited for simple arcade or social games<\/a><\/td>\n<\/tr>\n<tr>\n<td>Browser execution<\/td>\n<td>Runs entirely in browser, no install, no download, desktop and mobile<\/td>\n<td>Requires local IDE installation<\/td>\n<td>Browser-based code editor, game runs as a web page<\/td>\n<\/tr>\n<tr>\n<td>Roblox export<\/td>\n<td>One-click export to FBX, OBJ, or glTF with automatic LOD tuning for Roblox polygon caps<\/td>\n<td>No Roblox export pipeline<\/td>\n<td>No Roblox export pipeline<\/td>\n<\/tr>\n<tr>\n<td>Social collaboration<\/td>\n<td>Real-time multiplayer creation, share a link, build and play together instantly<\/td>\n<td>No real-time collaborative building<\/td>\n<td>Multiplayer coding via Replit Multiplayer, not a shared 3D world<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The core difference is that Nilo works as a game engine first, not just a prompt-to-code wrapper. <a href=\"https:\/\/summerengine.com\/blog\/best-ai-game-generators-2026\" target=\"_blank\" rel=\"noindex nofollow\">Browser-based AI game generators often lack real 3D support, engine access such as scene tree and node inspector, and the ability to bring in custom assets or fine-tune physics parameters<\/a>. Nilo was built from scratch to address those gaps for Roblox builders specifically.<\/p>\n<p>As one builder noted in Nilo\u2019s February 2026 survey: \u201cI like how it feels like a good game engine rather than a vibe coding tool, with easy building and a good focus on being able to export and import content.\u201d<\/p>\n<h2>Next Steps for Builders Ready to Go Beyond the Basics<\/h2>\n<p>You now have a full seven step framework for building a playable 3D obby with vibe coding, from a one-sentence concept to a Roblox-ready export. The steps above cover every part of that journey. The next move is simple, open a browser tab and start.<\/p>\n<p>Nilo is currently in open beta, backed by Supercell, the studio behind Clash of Clans and Brawl Stars, with a community of 9,000 plus builders on Discord. Jaakko Harlas, Head of Investments at Supercell, said: \u201cTheir approach to making game creation as enjoyable as gameplay itself really stood out. Nilo has the potential to open up game development to a whole new generation of builders.\u201d<\/p>\n<p>Scripting no longer blocks you. You can build what is in your head and share it with friends.<\/p>\n<p><a href=\"http:\/\/nilo.io\/?utm_source=aga&amp;utm_medium=blog&amp;utm_campaign=aga_content\" target=\"_blank\">Put the seven step framework into practice and start building your first obby in Nilo\u2019s open beta<\/a>.<\/p>\n<h2>Frequently Asked Questions<\/h2>\n<h3>What exactly is vibe coding, and how does it differ from regular AI-assisted coding?<\/h3>\n<p>Vibe coding is a workflow where you describe what you want to build in plain language, by talking, texting, or sending images, and an AI generates the working code. Your role is to guide, test, and refine instead of writing syntax. It differs from AI-assisted coding, where you still write most of the code and use AI for autocomplete or suggestions, because in vibe coding natural language becomes the main interface.<\/p>\n<p>You do not need to read every line the AI writes. You focus on whether the result behaves the way you intended and then iterate. For 3D game creation, this means describing game mechanics, assets, and behaviors in plain English and seeing them appear in a live 3D world in real time. Nilo\u2019s built-in code editor supports this workflow with real-time feedback so every prompt change is visible immediately in your world.<\/p>\n<h3>Can I really build and run a 3D game in a browser without installing anything?<\/h3>\n<p>You can build and run a 3D game in your browser without installing tools. The same type of technology that enabled Figma to deliver professional design tools in the browser powers this shift. Nilo\u2019s custom game engine uses C++ physics compiled to WebAssembly, which lets high performance code run in any browser, and it uses WebGPU for modern graphics with near native rendering performance on the web.<\/p>\n<p>This setup gives you real physics simulation, real-time 3D rendering, and multiplayer collaboration without downloads or expensive hardware. It works on desktop and mobile browsers. You share a link and anyone can click and play or build alongside you instantly, so older performance constraints for browser based 3D matter less at the level where Nilo operates.<\/p>\n<h3>My prompts keep producing results that do not match what I imagined. What should I do?<\/h3>\n<p>Prompt precision is the most common challenge for builders starting out with vibe coding. The fix is specificity, where you describe style, size, color, behavior, and context in the same prompt instead of leaving those open. Instead of \u201cadd a platform,\u201d try \u201cadd a cracked stone platform, low poly style, roughly 10 units wide, floating 5 units above the lava.\u201d<\/p>\n<p>For game mechanics, include the trigger and the result with concrete numbers, such as \u201cif the player touches the red spike ring, subtract one life and respawn at the last checkpoint.\u201d Change one thing per prompt and verify it works before adding the next change. If an output is wrong, describe the symptom you see, for example \u201cthe platform is rotating too fast,\u201d instead of guessing the cause.<\/p>\n<p>Nilo\u2019s real-time feedback loop lets you iterate quickly, and most prompt refinements take seconds to appear in your world. The more you build, the better your prompt instincts become.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Learn to build a playable Roblox obby by just describing it in plain language. Nilo&#8217;s AI handles the code and assets \u2014 no scripting needed.<\/p>\n","protected":false},"author":76,"featured_media":290,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-291","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.nilo.io\/articles\/wp-json\/wp\/v2\/posts\/291","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nilo.io\/articles\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nilo.io\/articles\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nilo.io\/articles\/wp-json\/wp\/v2\/comments?post=291"}],"version-history":[{"count":1,"href":"https:\/\/www.nilo.io\/articles\/wp-json\/wp\/v2\/posts\/291\/revisions"}],"predecessor-version":[{"id":1061,"href":"https:\/\/www.nilo.io\/articles\/wp-json\/wp\/v2\/posts\/291\/revisions\/1061"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nilo.io\/articles\/wp-json\/wp\/v2\/media\/290"}],"wp:attachment":[{"href":"https:\/\/www.nilo.io\/articles\/wp-json\/wp\/v2\/media?parent=291"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nilo.io\/articles\/wp-json\/wp\/v2\/categories?post=291"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nilo.io\/articles\/wp-json\/wp\/v2\/tags?post=291"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}