diff --git a/packages/frontend-misskey-world-engine/src/envs/lobby.ts b/packages/frontend-misskey-world-engine/src/envs/lobby.ts
index 4f8dacc32e..104547cb18 100644
--- a/packages/frontend-misskey-world-engine/src/envs/lobby.ts
+++ b/packages/frontend-misskey-world-engine/src/envs/lobby.ts
@@ -372,6 +372,17 @@ export class LobbyEnvManager extends WorldEnvManager {
 			this.engine.sr.updateMesh([worldRingH, ...worldRingH.getChildMeshes(), worldRingM, ...worldRingM.getChildMeshes()], false);
 		}, 100);
 
+		const sphere = this.meshes.find(m => m.name.includes('__DOME__'));
+		const texture = new BABYLON.CustomProceduralTexture('texture', '/client-assets/world/envs/lobby/shaders/bg', 4096, this.engine.scene);
+		texture.hasAlpha = true;
+		texture.wrapU = BABYLON.Texture.MIRROR_ADDRESSMODE;
+		texture.wrapV = BABYLON.Texture.MIRROR_ADDRESSMODE;
+		sphere.material = new BABYLON.StandardMaterial('sphereMat', this.engine.scene);
+		(sphere.material as BABYLON.StandardMaterial).diffuseTexture = texture;
+		(sphere.material as BABYLON.StandardMaterial).emissiveColor = new BABYLON.Color3(1, 1, 1);
+		(sphere.material as BABYLON.StandardMaterial).disableLighting = true;
+		(sphere.material as BABYLON.StandardMaterial).useAlphaFromDiffuseTexture = true;
+
 		const screenMeshes = this.meshes.filter(m => m.name.includes('__SCREEN__'));
 		const screenMaterial = screenMeshes[0].material as BABYLON.PBRMaterial;
 
diff --git a/packages/frontend/assets/world/envs/lobby/lobby.blend b/packages/frontend/assets/world/envs/lobby/lobby.blend
index c367e379f1..a55b5cdb90 100644
Binary files a/packages/frontend/assets/world/envs/lobby/lobby.blend and b/packages/frontend/assets/world/envs/lobby/lobby.blend differ
diff --git a/packages/frontend/assets/world/envs/lobby/lobby.glb b/packages/frontend/assets/world/envs/lobby/lobby.glb
index de7e3a85b0..a2feb1de05 100644
Binary files a/packages/frontend/assets/world/envs/lobby/lobby.glb and b/packages/frontend/assets/world/envs/lobby/lobby.glb differ
diff --git a/packages/frontend/assets/world/envs/lobby/shaders/bg/config.json b/packages/frontend/assets/world/envs/lobby/shaders/bg/config.json
new file mode 100644
index 0000000000..ff95a73978
--- /dev/null
+++ b/packages/frontend/assets/world/envs/lobby/shaders/bg/config.json
@@ -0,0 +1,8 @@
+{
+	"animate": true,
+	"refreshrate": 1,
+	"uniforms": [
+	],
+	"sampler2Ds": [
+	]
+}
diff --git a/packages/frontend/assets/world/envs/lobby/shaders/bg/custom.fragment.fx b/packages/frontend/assets/world/envs/lobby/shaders/bg/custom.fragment.fx
new file mode 100644
index 0000000000..200eb28932
--- /dev/null
+++ b/packages/frontend/assets/world/envs/lobby/shaders/bg/custom.fragment.fx
@@ -0,0 +1,92 @@
+precision highp float;
+
+// render polka dot background with alpha channel
+
+vec4 permute(vec4 x){return mod(((x*34.0)+1.0)*x, 289.0);}
+vec4 taylorInvSqrt(vec4 r){return 1.79284291400159 - 0.85373472095314 * r;}
+
+float snoise(vec3 v){
+  const vec2  C = vec2(1.0/6.0, 1.0/3.0) ;
+  const vec4  D = vec4(0.0, 0.5, 1.0, 2.0);
+
+// First corner
+  vec3 i  = floor(v + dot(v, C.yyy) );
+  vec3 x0 =   v - i + dot(i, C.xxx) ;
+
+// Other corners
+  vec3 g = step(x0.yzx, x0.xyz);
+  vec3 l = 1.0 - g;
+  vec3 i1 = min( g.xyz, l.zxy );
+  vec3 i2 = max( g.xyz, l.zxy );
+
+  //  x0 = x0 - 0. + 0.0 * C
+  vec3 x1 = x0 - i1 + 1.0 * C.xxx;
+  vec3 x2 = x0 - i2 + 2.0 * C.xxx;
+  vec3 x3 = x0 - 1. + 3.0 * C.xxx;
+
+// Permutations
+  i = mod(i, 289.0 );
+  vec4 p = permute( permute( permute(
+             i.z + vec4(0.0, i1.z, i2.z, 1.0 ))
+           + i.y + vec4(0.0, i1.y, i2.y, 1.0 ))
+           + i.x + vec4(0.0, i1.x, i2.x, 1.0 ));
+
+// Gradients
+// ( N*N points uniformly over a square, mapped onto an octahedron.)
+  float n_ = 1.0/7.0; // N=7
+  vec3  ns = n_ * D.wyz - D.xzx;
+
+  vec4 j = p - 49.0 * floor(p * ns.z *ns.z);  //  mod(p,N*N)
+
+  vec4 x_ = floor(j * ns.z);
+  vec4 y_ = floor(j - 7.0 * x_ );    // mod(j,N)
+
+  vec4 x = x_ *ns.x + ns.yyyy;
+  vec4 y = y_ *ns.x + ns.yyyy;
+  vec4 h = 1.0 - abs(x) - abs(y);
+
+  vec4 b0 = vec4( x.xy, y.xy );
+  vec4 b1 = vec4( x.zw, y.zw );
+
+  vec4 s0 = floor(b0)*2.0 + 1.0;
+  vec4 s1 = floor(b1)*2.0 + 1.0;
+  vec4 sh = -step(h, vec4(0.0));
+
+  vec4 a0 = b0.xzyw + s0.xzyw*sh.xxyy ;
+  vec4 a1 = b1.xzyw + s1.xzyw*sh.zzww ;
+
+  vec3 p0 = vec3(a0.xy,h.x);
+  vec3 p1 = vec3(a0.zw,h.y);
+  vec3 p2 = vec3(a1.xy,h.z);
+  vec3 p3 = vec3(a1.zw,h.w);
+
+//Normalise gradients
+  vec4 norm = taylorInvSqrt(vec4(dot(p0,p0), dot(p1,p1), dot(p2, p2), dot(p3,p3)));
+  p0 *= norm.x;
+  p1 *= norm.y;
+  p2 *= norm.z;
+  p3 *= norm.w;
+
+// Mix final noise value
+  vec4 m = max(0.6 - vec4(dot(x0,x0), dot(x1,x1), dot(x2,x2), dot(x3,x3)), 0.0);
+  m = m * m;
+  return 42.0 * dot( m*m, vec4( dot(p0,x0), dot(p1,x1),
+                                dot(p2,x2), dot(p3,x3) ) );
+}
+
+uniform float time;
+
+void main(void) {
+	vec2 uv = gl_FragCoord.xy / vec2(4096.0, 4096.0);
+	float noise = snoise(vec3(uv.x * 3.0, uv.y * 3.0, time * 0.05));
+	float radius = 0.001;
+	float spacing = 0.01;
+	float x = mod(uv.x, spacing);
+	float y = mod(uv.y, spacing);
+	float dist = sqrt((x - spacing / 2.0) * (x - spacing / 2.0) + (y - spacing / 2.0) * (y - spacing / 2.0));
+	if (dist < radius) {
+			gl_FragColor = vec4(1.0, 1.0, 1.0, max(0.0, noise - 0.5) * 2.0);
+	} else {
+			gl_FragColor = vec4(0.0, 0.0, 0.0, 0.0);
+	}
+}