Updated February 12 — Periphery Online Steam update #1400668

New unit - Submarine: - When underwater, the submarine cannot attack and does not receive damage itself, this allows it to safely approach dreadnoughts and pass through narrow passages protected by towers. - When submerged, the submarine's viewing radius is halved, and its speed is reduced to 4.3 km/h. - You can only give the order to dive in places that are deep enough, and if the oxygen supply is more than 30%. The oxygen supply is enough for 10 minutes. - Surfacing is possible at any time. When the oxygen supply is less than 5%, the submarine will surface automatically. When on the surface, the oxygen supply is gradually restored. - Anti-ship mines work on a submarine regardless of whether it is underwater or not. - A submarine can be built in a dock. Spy satellite: - The spy satellite now takes 24 hours to build and costs 50,000 energy. - The spaceport with the satellite now dispels ...