Sim World Awaits: Run cities, fly planes, or drive trucks—these simulation games are free and immersive.
Microsoft Flight Simulator (Free via Game Pass Trial): Fly ultra-realistic aircraft in detailed weather and locations. Unmatched realism with trial access.
GeoFS Flight Simulator: Browser-based global flight sim with multiplayer and real-time weather. Surprisingly deep for free.
Yandere Simulator: A dark school-life sim with stealth, drama, and sandbox-style choices. Still in development.
Sim Companies: Build a virtual business empire in this strategic economic simulation game. Realistic and competitive.
Virtonomics: Manage virtual startups and trade in realistic economic environments. Great for business-minded gamers.
OpenTTD: A transport empire sim based on Transport Tycoon Deluxe—trains, buses, and logistics galore.
Citybound (Indie): City-builder focused on realism and scale. Still in development, but entirely open-source and free.
Final Picks: Whether flying, building, or managing, these free simulation games offer depth without the cost.