I'm not one to join forums just to tell people about a single sim, but I figured this would be worthwhile.
I've recently found a free server/sim that seems to be based on Warbirds 2.77. I know a lot of us cut our teeth on this flight model many, many years ago and it's a real thrill to fly against real live human opponents again.
Its graphics are dated, the cockpits are bitmap, you can count the polys and particles without great difficulty... But in this guys opinion, it has one of the best flight models yet.
It's set up in a campaign-style system. You close airfields with bombers and fighter/bombers, then take them with troop transports. Pretty standard these days, but was revolutionary back in the day.
A rolling plane set is also in effect - everyone starts with early war planes, and as time passes, more advanced aircraft become available. Eventually, the cycle is reset.
The community seems nice enough, and apparently has been around quite awhile. Server traffic is weird. Some times I see masses of people flying, other times there's nobody. I'm gonna do a Conan here. Shrug, and say "'It's a free show, folks." Besides, if unmolested bombing is your thing, just log on late at night...
Good forum to ask any questions you may have. Plus, the login/pass is the same as the forum account. It's neat like that.
The homepage for the project, hopelessly out of date. Good for core downloads like the engine and extra art packs, but the client launcher is out of date, as is the IPs.
The second post contains the download link and new IP of server.
How the hell had I not heard of this until a few weeks ago?