Stay away from the Arcade mode, and you'll be fine.
The cpits are a fantastic place to sit and fight in and the immersion is excellent. The FX are what I have cried for AH to have since I made a post about it in2010. Considering that War blunder is using a Graphics engine of Wing of Prey (2008), kind makes my smile a little.
Full Real Battles are pretty good, I recommend hooking up with some AH players that have picked it up also.
Limited ammo and fuel are in this mode. And the Cpit view is forced, you can't look around too well because the game simulates you being strapped into the seat (and I challenge anyone you rotate their head 360'). Convergence can be adjusted as well as bullet type loadouts; from AP to HE rounds etc.
My problem with War blunder is the obvious Russian bias. Lagg3, La5 and 7 are insanely good, stupidly so. The 109F and E cant outturn either, even on full flaps. Also the 109E has the ata from a 109F, the G2 + F has 109E ata, the 109Es ammo counter doesn't work, so the game has a number of flaws.
The weather and the air feel a lot more realistic (AcesHigh air is so dense it feels like your flying through soup just point and you go), the transition into the clouds shakes you a little.
The ack is more realistic and hardly get any clean hits, but the shells exploding around you cause shock waves that shake you around a little.
People will argue that War blunder is poor because it looks pretty and the flight model is terrible, but they have only flown in Arcade (where the flight model is dumbed down for the children).
FRB is where it's at, and there is no horde which is a big plus. But you need a good pair of eyes because there is no icon in that mode, or stall horn for that matter.
AH players will find it a difficult transition without the AH Stall Horn to rely on.
It's a decent game and an acceptable alternative to AcesHigh. Plus if you like Early war like I do, you can get away with never having to pay a penny for the damn thing <G>