diff --git a/src/data/maps/MapTypes.ts b/src/data/maps/MapTypes.ts
index 62aca9b7..f17ce9db 100644
--- a/src/data/maps/MapTypes.ts
+++ b/src/data/maps/MapTypes.ts
@@ -319,19 +319,6 @@ export function createMineralLine(
   return minerals;
 }
 
-// Legacy helper with direction parameter (backwards compatibility)
-export function createMineralLineOld(
-  baseX: number,
-  baseY: number,
-  direction: 'horizontal' | 'vertical' = 'horizontal',
-  amount: number = 1500
-): ResourceNode[] {
-  // Convert old API to new: assume base is ~10 units away in the direction
-  const offsetX = direction === 'horizontal' ? -10 : 0;
-  const offsetY = direction === 'vertical' ? -10 : 0;
-  return createMineralLine(baseX, baseY, baseX + offsetX, baseY + offsetY, amount);
-}
-
 // Helper to create plasma geysers (typically 2 per base)
 // Places geysers at the ends of the mineral arc, forming a continuous crescent
 // mineralCenterX/Y: center of the mineral arc
diff --git a/src/rendering/Terrain.ts b/src/rendering/Terrain.ts
index 63b26559..76ea081f 100644
--- a/src/rendering/Terrain.ts
+++ b/src/rendering/Terrain.ts
@@ -203,20 +203,12 @@ function _voronoiNoise(x: number, y: number, frequency: number = 4): number {
   return Math.sqrt(minDist);
 }
 
-// Legacy noise functions for compatibility
+// Simple deterministic noise for color variation
 function noise2D(x: number, y: number, seed: number = 0): number {
   const n = Math.sin(x * 12.9898 + y * 78.233 + seed) * 43758.5453;
   return n - Math.floor(n);
 }
 
-function _smoothNoise(x: number, y: number, scale: number, seed: number = 0): number {
-  return fbmNoise(x / scale + seed * 0.1, y / scale + seed * 0.1, 3, 2.0, 0.5) * 0.5 + 0.5;
-}
-
-function _fractalNoise(x: number, y: number, octaves: number, persistence: number, seed: number = 0): number {
-  return fbmNoise(x * 0.1 + seed * 0.01, y * 0.1 + seed * 0.01, octaves, 2.0, persistence) * 0.5 + 0.5;
-}
-
 // PERF: Terrain chunk size for frustum culling
 // Each chunk is a separate mesh with its own bounding box
 // Chunks outside the camera frustum are automatically culled by Three.js