Flight simulation is not a genre everyone is going to love. The learning curve is steep and takes patience. Free flight sims are a perfect way to introduce yourself into the flight sim world. When you are flying like an expert, maybe you too can help out in the development.
1. "Flight Gear"
"FlightGear" is an open-source project developed by a community of gamers looking for a solution to their needs the publishing giants was not solving. You won't find a flashy game with no substance here. Realism is what it's all about.
2. "Aces High"
Screenshot © HiTech Creations, Inc.
A World War II flight sim that offers free offline and 8 person head-to-head play. You have a choice of 50 aircraft from 6 different countries. Man tanks, carriers, cruisers, and many more. There is a subscription fee for online play; the download comes with 2 weeks free.