Best for
Developers building browser-based 3D experiences, FPS game prototypes, or interactive 3D product showcases
Stack
A ready-made First-Person 3D Starter UI you can fork, run, and customize with the prompt pack below.
What's actually inside
The honest engineer's breakdown — what the First-Person 3D Startertemplate does, how it's wired, and where it's opinionated.
The First-Person Starter wraps a complete 3D scene in a React Three Fiber (R3FCanvas) setup with renderer, camera, and shadow configuration handled automatically. FirstPersonControls uses PointerLockControls from @react-three/drei to capture the mouse cursor for free-look, combined with keyboard WASD state tracking for movement. The scene itself (SceneGeometry) includes a floor plane, walls, and basic Box and Sphere primitives as interactive objects. AmbientDirectionalLighting provides basic scene illumination with Two.js AmbientLight and DirectionalLight. Before the user clicks to activate pointer lock, PointerLockOverlay shows a '(Click to enter)' prompt.
A basic CollisionSystem prevents the player from walking through walls using bounding-box checks. The HUD is a 2D React overlay rendered outside the R3FCanvas — this is the correct pattern for game UI in react-three-fiber: HTML elements as an overlay on the canvas, not inside the 3D scene. PerformanceMonitor shows the drei Stats FPS counter in development mode.
The most important thing to know about this template: deploy it to Vercel before testing. Three.js and @react-three/fiber are large libraries that V0's esm.sh preview sandbox sometimes fails to load entirely (see gotchas). PointerLockControls also require HTTPS and can't run inside an iframe. The game is excellent — but the V0 preview environment is the wrong place to evaluate it.
Key UI components
R3FCanvas@react-three/fiber Canvas wrapping the 3D scene with camera and renderer setup
FirstPersonControlsPointerLockControls from drei for mouse-look + WASD keyboard movement state
SceneGeometryFloor plane, walls, and basic 3D Box/Sphere primitives forming the environment
AmbientDirectionalLightingThree.js AmbientLight + DirectionalLight for basic scene illumination
PointerLockOverlayUI overlay prompting 'Click to enter' before pointer lock activates
CollisionSystemBasic bounding-box collision against SceneGeometry to prevent wall walking
HUD2D React overlay outside R3FCanvas showing crosshair and game UI
PerformanceMonitordrei Stats component showing FPS in development mode
Libraries it leans on
@react-three/fiberReact renderer for Three.js — manages the render loop and scene graph as React components
@react-three/dreiHigher-level helpers: PointerLockControls, useGLTF, Environment, Stats, and Suspense wrappers
Three.jsUnderlying 3D engine: geometries, materials, lighting, raycasting, and camera math
Tailwind CSSStyles the 2D HUD overlay and PointerLockOverlay prompt
Fork it and get it running
Forking takes about 10 minutes because the deploy-first step is mandatory — the game requires a real browser context with HTTPS for pointer lock. Do not judge the template by V0 preview.
Fork the template from V0 community
Open https://v0.dev/chat/community/90Cd8ykGmY6 and click 'Fork' to copy into your V0 workspace. You'll land in the V0 editor with the template loaded.
Tip: Sign in to V0 before clicking Fork.
You should see: You land in the V0 editor. The Preview tab may show a loading spinner or blank canvas — that's expected due to Three.js sandbox limitations.
Skip the preview — deploy immediately
Do not spend time trying to make V0 preview work for this template. Three.js-heavy templates may fail to load in V0's esm.sh sandbox. Instead, go directly to the next step: publish to Vercel.
Tip: This is the single most important advice for 3D V0 templates — deploy first, test on the live URL.
You should see: You skip Preview and move to publishing.
Publish to Vercel
Click Share → Publish tab → 'Publish to Production'. Vercel builds the project and deploys in 30-60 seconds. You'll get a .vercel.app URL. This URL uses HTTPS, which is required for PointerLockControls to function.
You should see: A live .vercel.app URL is shown. The 3D scene builds and deploys successfully.
Test on the live Vercel URL in Chrome or Firefox
Open the Vercel URL in Chrome or Firefox on desktop. Click the canvas to see the PointerLockOverlay prompt, then click again to lock the pointer and enter the 3D scene. Test WASD movement and mouse-look. If pointer lock fails in one browser, try the other — Chrome has the most reliable pointer lock implementation.
Tip: Pointer lock does not work on mobile — desktop Chrome or Firefox is required.
You should see: Pointer locks, WASD moves the player through the scene, mouse rotates the view, and the HUD crosshair is visible.
Connect GitHub to pull 3D scene code locally
Click the Git panel in V0 and connect your GitHub account. V0 creates a branch (v0/main-{hash}) tracking your edits. Pull the project locally via Cursor or VS Code — local development is the best environment for iterating on Three.js scene code without consuming V0 credits.
You should see: The Git panel shows a connected repo. Clone it locally and run npm install to get the full Three.js dev environment.
Add 3D models via /public/models/
To add real 3D assets (.glb or .gltf files), place them in /public/models/ in the project. Load them with the useGLTF hook from @react-three/drei. Wrap the useGLTF call in a React Suspense boundary with a visible fallback mesh while loading. Test on the deployed Vercel URL after pushing via the Git panel.
Tip: Keep .glb files under 5MB for reasonable first-load performance on the web.
You should see: 3D models appear in the scene at the positions you specify.
The prompt pack
Copy-paste these straight into v0's chat to customize the First-Person 3D Startertemplate. Each one names this template's own components — no generic filler.
Change scene environment and lighting
Replaces the default grey scene with a grid floor, warmer point light, and a night skybox environment.
Replace the plain grey floor in SceneGeometry with a grid-textured floor using THREE.GridHelper positioned at y=0. Change the AmbientDirectionalLighting: set AmbientLight intensity to 0.3 and add a PointLight at position [0, 5, 0] with intensity 1.5 and color #FFD700. Add a skybox using the Environment component from @react-three/drei with preset 'night'. Keep the existing PointerLockOverlay and HUD.
Load a GLTF model into the scene
Adds a real GLTF 3D model to the scene with a Suspense loading fallback.
Add a 3D model to SceneGeometry. Load the file at /public/models/crate.glb using the useGLTF hook from @react-three/drei. Place the model at position [3, 0.5, -5]. Add a PointLight near it at position [3, 2, -5] with intensity 1.2 so it's visible in the scene. Wrap the useGLTF call in a React Suspense boundary with a visible Box mesh fallback while the model loads.
Improve CollisionSystem with per-object AABB checks
Adds per-object collision so the player can't walk through SceneGeometry boxes and spheres.
Improve the CollisionSystem to prevent the player from walking into the Box and Sphere objects in SceneGeometry. Use a sphere-to-AABB collision check: if the player's bounding sphere (radius 0.5) intersects any object's AABB bounding box, push the player back along the collision normal before applying the movement. Apply this check in the FirstPersonControls movement update, after computing the desired new position but before committing it.
Add enemy NPC with basic patrol AI
Adds a patrolling NPC that switches to player-facing behavior when within 3 units.
Add a simple enemy NPC to the scene. Render it as a red capsule mesh (use CylinderGeometry topped with a SphereGeometry, or CapsuleGeometry if available). The NPC should patrol between two waypoints at positions [-3, 0, -3] and [3, 0, -3], switching direction when it reaches each waypoint. Move at 1.5 units per second using useFrame from @react-three/fiber, multiplying by the delta argument for frame-rate independence. When the player's position (from FirstPersonControls) is within 3 units of the NPC, stop patrolling and rotate the NPC to face the player.
Add 2D minimap overlay to the HUD
Adds a real-time 2D top-down minimap in the HUD showing player position and scene walls.
Add a 2D minimap to the HUD overlay. Create a separate HTML5 Canvas element (distinct from R3FCanvas) rendered as an absolute-positioned element in the top-right corner of the screen (120x120px). Each frame, use useFrame from @react-three/fiber to forward the player position and rotation to a ref. In the minimap's useEffect, draw a top-down view: dark grey background, white rectangles for the SceneGeometry walls, and a blue dot for the player at the correct relative position with a line indicating facing direction. Update the minimap canvas on each animation frame via requestAnimationFrame.
Gotchas when you extend it
The failures people actually hit when they push this template past its defaults — and the exact fix for each.
`Error: Failed to load "https://esm.sh/three"` in V0 previewWhy: Three.js is a large, complex library that V0's esm.sh preview sandbox sometimes fails to fully resolve. @react-three/fiber has Three.js as a peer dependency, compounding the resolution complexity.
Fix: Don't rely on V0 preview for this template. Click Share → Publish → Publish to Production and test the game on the live Vercel URL instead.
Three.js fails to load in V0 preview. This is a known esm.sh sandbox limitation with large libraries. Click Share → Publish → Publish to Production and test the game on the Vercel URL instead of in V0's preview tab.
PointerLockControls silently fail to acquire pointer lock in V0 previewWhy: The Pointer Lock API requires a secure context (HTTPS) and a user gesture. V0's preview iframe doesn't provide a qualifying HTTPS context, so the API call silently fails without throwing an error.
Fix: Test PointerLockControls on the Vercel deployment URL only. The live Vercel URL uses HTTPS and supports pointer lock correctly.
PointerLockControls don't work in V0 preview. Pointer lock requires HTTPS and can't run in an iframe. Deploy to Vercel (Share → Publish) and test on the live URL.
Frame rate drops below 30fps when adding more SceneGeometry objectsWhy: Each Three.js mesh that doesn't use instancing creates a separate GPU draw call. Adding 50+ individual Box meshes can saturate the draw call budget on mid-range hardware.
Fix: Use InstancedMesh for repeated objects (boxes, trees, obstacles). For 20+ identical boxes, create one InstancedMesh with count=20 and position each instance using setMatrixAt.
Adding more SceneGeometry objects tanks frame rate. Consolidate identical objects using InstancedMesh from Three.js. For 20+ boxes, create one InstancedMesh with count=20 and set each instance's matrix position using setMatrixAt.
`Module not found: Error: Can't resolve '@react-three/fiber'` after forkingWhy: @react-three/fiber and @react-three/drei are not pre-installed in every V0 project. If the fork doesn't include a package.json with these deps, the build fails.
Fix: In the V0 chat, prompt: 'Install @react-three/fiber @react-three/drei and three as dependencies'. Alternatively, use the 'Fix with v0' button on the build error to let V0 resolve it automatically.
Install @react-three/fiber, @react-three/drei, and three as dependencies. Ensure they are listed in package.json. Verify the R3FCanvas import path resolves after installation.
Template vs. custom — the honest call
A forked template gets you far, fast. Here's where it holds up, and where you'll outgrow it.
The template is enough when
- You're prototyping a 3D game mechanic or interactive product showcase and need working first-person controls today
- You want to learn react-three-fiber with a real working example to study and modify
- You're building a 3D product showcase or virtual showroom prototype
- You need a hackathon 3D game base without starting from scratch
Go custom when
- You need physics simulation — that requires Rapier or Cannon.js, which V0 can scaffold but adds significant complexity
- You're building a fully featured FPS with assets, sounds, AI enemies, and networking
- You need mobile touch controls — pointer lock doesn't work on mobile, requiring a virtual joystick on the HUD
- You're targeting WebXR/VR — that requires different camera rig and input setup
RapidDev extends V0 3D starters into full interactive experiences — adding asset pipelines, physics, and optimized performance for production.
Frequently asked questions
Is this template free?
Yes. It's a free V0 community template — forking is free. AI chat edits after forking consume V0 credits.
Can I use this template commercially?
Yes. The code stack (@react-three/fiber MIT, @react-three/drei MIT, Three.js MIT, Next.js MIT) is fully permissively licensed. Any 3D assets you add need to be licensed appropriately for your use case.
Why does my fork show a blank screen or loading error in V0 preview?
This is expected. Three.js and @react-three/fiber are too large for V0's esm.sh preview sandbox to reliably resolve. The fix is to deploy immediately via Share → Publish → Publish to Production, then test on the Vercel URL. Don't evaluate this template's quality based on the preview.
Why doesn't pointer lock work in the V0 preview tab?
The Pointer Lock API requires HTTPS and a proper user gesture. V0's preview is an iframe without a qualifying secure context, so PointerLockControls silently fails. Deploy to Vercel — the .vercel.app URL is HTTPS and pointer lock works correctly there.
How do I connect a database to this template?
The template is a pure client-side 3D scene with no database. The most common addition is a Supabase leaderboard or player position sync. Add NEXT_PUBLIC_SUPABASE_URL and NEXT_PUBLIC_SUPABASE_ANON_KEY to the V0 Vars panel, then use Server Actions for DB writes. The advanced Supabase multiplayer prompt on this page shows the full pattern.
Does this work on mobile?
No. Pointer lock doesn't work on mobile browsers — it's a desktop-only API. To support mobile, you'd need to replace PointerLockControls with a virtual joystick on the HUD overlay and touch-based camera rotation. That's a medium-complexity extension, not included in the starter.
Can RapidDev help extend this 3D template?
Yes. RapidDev extends V0 3D starters into production-grade interactive experiences — adding GLTF asset pipelines, Rapier physics, mobile touch controls, and performance optimization for real user traffic.
How do I add physics to the scene?
Install @react-three/rapier and wrap the scene in its Physics component. Add RigidBody and CuboidCollider to the GroundPlane with type='fixed'. The gotcha prompt about Rapier bodies falling through the ground (in the third-person-starter template) covers the exact setup — the pattern is identical here.
Outgrowing the template?
RapidDev turns v0 prototypes into production apps — real auth, database, and payments — at $13K–$25K.
Book a free consultation30-min call. No commitment.