Clans

Start a clan from the clan panel, or accept an invite from another player. Clan members count as allies, so swarms sent to their planets reinforce them rather than attack. The clan leader handles invites and can kick members.

Clans win together: when a clan collapses a galaxy's black hole, every member receives the full 10,000-energy reward, not a split. Coordinating attacks on suns and black holes is the fastest route to a win.