Add a friend by their player ID and ask them to add yours. Friends who are online can be invited to play together.
Other players see this name when your lands meet and in their friends list.
It brings this colony back in another browser or on another computer, through "Restore Colony" on the title screen.
Keep it private: anyone who has it can play your colony.
Something broken, confusing, or one you love? It goes straight to the developer, with your player ID so they can find your colony.