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Airship (3.1)

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https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=617073160

Block count: 1464

It stays afloat on its own, and ascends slightly even if nothing is pressed. It is almost perfectly symetrical, only the placements of some of the ropes are off.

The up arrow makes it rise by increasing the rate at which the propelers rotate.
The down arrow makes it decend by decreasing the rate at which the propelers rotate.
The left arrow makes it turn left, via propellers on the front and back.
The right arrow does the opposite of the left one.
The cannons are on the usual button.

It will break within the first few seconds of the simulation if invinvibility is not on, but will (usually) float for a short time afterward.

I usually run can run it at 20% speed without lag, using a GTX 760 graphics card, a 3.4GHz (I think GHz is the right unit) i5 CPU, and 16GB of RAM. Adjust the speed on your machine accoringly to avoid long periods of loading.