Airships: Conquer the Skies is part of the Planes, Trains, and Automobiles Fest which starts today. As part of this festival, the main game, the DLC and the soundtrack are discounted by 25%.
Also, I've made a small update for the demo of my second game Airships: Lost Flotilla. A torpedo boat! Check it out here:
https://store.steampowered.com/app/2978530/Airships_Lost_Flotilla_Demo/