Extreme Drones

Mid Range Round Slow Moving Tones Sci-Fi, Ambience, Bell Tone

Pulsating Electro Static Drone Pulsating, Electro, Static

Alien Planet Surface Ambience Planet, Alien, Surface, Sci-Fi

Steam Release Various Steam, Release

Cave Ambience with Sporadic Rhythmic Elements Cave, Rhythmic

Steady Air Flow Air, Flow

Uplifting Shimmer Tones Uplifting, Shimmer Tones

Pulsing Tones with Whirls / Subtle Background Voice Crescendos at Mid Pulsing, Whirls, Voice

Low Distant Vocal Background with Deep Bass Vocal, Distant, Deep Bass

Activity Orchestra Atonal Metallic Movement

Deep Bell Waves with Light Airy Background Bell Waves, Airy, Deep

Bell Tone with Slow Changing Pitch Bell Tone

Ambient Rhythmic Machinery Steady Working Machines Slightly Comical Effect

Light Active Machinery Ambience Machinery

Space Ambience with Low Sub Atmosphere Space, Low Sub

Steady Big Machine Machine, Big

Metallic Airy Shrill Bell Tones Metallic, Shrill, Airy, Bell

Dark Bells Huge Bells with Long Decay and Deep Airy Background

Engine Room1 ( Close Up Machinery ) Machinery, Engine, Room

Wind Tunnel with Alien Scratch Tunnel, Wind, Alien, Scratch

Mystical Rising Tonal Textures Mystical, Rising, Sci-Fi

Slow Rising Airy Space Airy Space

Steady Low Airy Passageway Passageway, Airy

Steady Tractor Beam Tractor Beam