When it comes to smoke and fire effects on the BOS, they are not so good and poor(there are permanent static fire and smoke effects in MP that you can add to static objects and buildings) for example, after you attacked targets you will not see permanent smoke and fire effects that will last all the time, they are like unmoded il-2 Sturmovik 1946. When an aircraft is shot down, you will not see the rising smoke column effect that will last! another example, when you have crash landed and the plane is burning, you can not leave it (if you get shot down, the game quickly and suddenly without your control will finish and it jumps to the mission screen) even after you've landed safely, you can not move your airplane either! and the AI planes will be disappear after few seconds after they have landed (Dead bodies and debris parts will disappear too, it seems developers have implemented a disappearing feature in the game! ) and the static models have low polygon modeled an low resolution textured. In summary there are a lot immersion killing moments in this game, therefore i don't play it often.