At its core, the game is about designing airships and fighting with them. Ships are put together out of modules, and the layout of modules matters a great deal: everything on board is done by individual airsailors who need to run around, ferrying coal, ammunition, water and repair tools - and sometimes their fallen comrades.
This is an "early access" release, which means the game is by no means done or perfectly polished. There's lots of features which I'm planning to add in the near future, such as boarding combat, more modules, varied terrain, etc.
Do join me on the game forums. I would love to hear your feedback on the game - and don't you want to see if you can defeat me in multiplayer?