I've played many WWI "sims" over the decades. Rise of Flight was pretty good. Would buy IL-2 Flying Circus but it's 80 bucks. Will watch for a sale.
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Just saw it at the IL-2 site for much less, non-steam. Gonna hafta buy it.
Not entirely sure here but I think I thought I might have heard Flying Circus is pretty much a re-tooling of Rise of Flight. I always had RoF, just never really did much with it. Not so much so with Flying Circus... it just feels better.
Regardless, Flying Circus is a hoot to doddle around in. There's a couple of MP servers, no idea if they're ever populated. Regardless, I really get a lot of enjoyment from it in SP.