Inis is a game deeply rooted in Celtic history and lore in which players win by being elected King of the Island (Inis). Players can try to achieve one of three different victory conditions:
- Leadership: Be the leader — i.e., have more clan figures than any other player — of territories containing at least six opponents' clans.
- Land: Have your clans present in at least six different territories.
- Religion: Have your clans present in territories that collectively contain at least six sanctuaries.