Iwari is an abstract-like Eurogame in which players represent different tribes looking for their identity by traveling around far lands and expanding their settlements into five different regions on the board. In the game, players use cards for two different actions:

1) Place tents and expand their settlements into five different regions on the board in a majority game that scores on each territory.

2) Construct nature totems to bond with the Titans by placing them on regions and score points based on the totem majorities in adjacent territories.

During the game, players can complete missions that grant small perks and score points by having the majority of tents in each territory after the end of the first card cycle. At game end, the majority of tents will be scored again, along with the majorities of nature totems in two adjacent regions and settlements that players have created (i.e., four or more tents in an uninterrupted sequence along one of the roads on the board).