: Essential because Orbiter has no native sound. It adds engine noises, cabin sounds, and radio chatter.
Enhancing through mods (or "add-ons") is essential for a complete experience, as the base game lacks features like sound and high-resolution textures. Essential Performance & Visual Mods Orbiter Space Flight Simulator Mods
Before adding spacecraft, these core mods improve the engine and environment: : Essential because Orbiter has no native sound