Co-op

Blue Oath has a real-time co-op mode with 3 players using fleets of 4 ships. Each sortie consumes 1 RP, and players are allowed to have a maximum of 5 RP. It takes 3 hours to regenerate one point of RP. Drops from this mode can be used to exchange for weekly-refreshing resonance and equipment LB mats at the shop.

The co-op mode can be accessed from the bottom right of the screen (出撃→共闘)



Each enemy has 3 difficulties, and higher difficulties can only be unlocked by clearing the preceding difficulty in single player mode (which allows for a fleet of 6 ships).



Selecting "Join Team" will bring up a list of currently open rooms.



Joining or creating a room will bring up this screen. When creating a room, select the icon next to the room type to change the room into a public room.



Trivia
Co-op mode was added as a permanent game mode on April 27, 2021 after a short test event with Unknown M one month before.



Gamma HP: Easy: 235,540 Normal: 661,453 Hard: 1,224,553