The bad:
* Boring repetitive gameplay.
* Bad AI.
* Tiny maps.
* Awful quality of maps (ground textures are ugly, lack of objects).
* Graphics are not good (it may looks good on screenshots, but it ugly in motion) - trees and clouds are just plane sprites (reminds me of 2000th).
* Lack of achievements.
* No replay value.
* No simulator control scheme for gamepad.
* Dead and pointless multiplayer.
* Story. Your alter ego is muted. Why Thompson fight for so long? For what? There is no answer.

The good:
* Soundtrack.
* Relatively long campaign.
* About 20 authentic planes and copters.
* You can control up to 6 various aircraft at single mission and switch them freely.
* Random rescure MIA pilots from your squad are interesting for first 1-2 times.

Some additional thoughts:
This game has somekind of historical accuracy: Americans are bad - bombing civilians, spreading agent orange, napalming villages. But if you don't like to be bad, you don't like to play this game. Well, if you American - you may like such "patriotism".
It is the worst game of the Air Conflicts series.
If you want to get flight arcade game look at HAWX1-2 (better graphics, better gameplay, better replay value) or Ace Combat (fun gameplay).

I think it is very mediocre - this game is surely not my best buy.
Metacritics score: ~44 (http://www.metacritic.com/game/pc/air-conflicts-vietnam)

This game could be the single reason I may never pre-purchase anything again. While this developer has put out some VERY nice work in the past Air Conflicts: Vietnam isn't one of them. There are two huge flaws that are pretty much impossible to overlook. The first one that really hits you in the face are the small maps. Imagine trying to fly a jet inside the airspace of a tennis court. Then imagine trying to fight a battle in that same cramped space. its not very practical. So you spend much of the game flying out of bounds which is no fun and I would say makes the game unplayable. Second are the graphics. They didn't look that stellar in the trailers but I will normally ignore minor graphic issues in exchange for good game play. Unfortunately the graphics are far worse than in the trailers. Jaggy beyond redemption is probably the best term to describe it and no GPU or tweaking is going to fix it. Air Conflicts: Vietnam would need a complete overhaul of its graphics and maps to be reasonably playable. Hopefully the developer will eventually roll out some patches to make this a more enjoyable game. It could happen, I guess, but right now the game isn't ready for prime time.

I can't recommend this game. Graphically it's very messy for something this recent. Controls wise it is likewise messed up, without much functionality for changing the axis of various manuevers. In the jets, C-123 etc, there isn't even an independent rudder/aileron control that I've found-so if you pull up then want to roll, it ends up sending you in some crazy direction of its own devising. (I've played it with mouse/keyboard and 360 controller; it's possible that it's better/more adjustable with a joystick but the game turned me off so much I didn't go to the trouble of plugging in my stick)

The maps are tiny (so tiny that in a jet, I went from out of bounds to out of bounds in less than 10 seconds while trying to kill a MiG) and the voice acting is corny at best.

I hoped that the helicopter mode would be better, but no. Clunky controls, no way to change rudder/attitude controls, massively sluggish yaw. No challenge in attack chopper so far-you sit back in your AH-1 and lob in rockets from way outside the range of the enemy.

This game would have been good ten or fifteen years ago. As a 2013 title, noooo way.

Definitely not worth $30; I would probably still regret this purchase if it was $10. Very disappointed.

Story line is not good, could of been overlooked if Flight physics were more realistic. I would love to see more Vietnam war games because I am a Huey Fan but this one is just no good, If I could get a refund and return I would...

it is terrable
DO NOT BUY IT
waste of money for a new game, bad interface,graphics actually everthing is bad about it