stratum is a tile-based movement board game developed as a use for the ikikaza package/product concept design. Players begin on one of the arms of the star-shaped board and attempt to acquire "Material Rings" at the extreme end of each arm.

Hexagon and pentagon tiles represent different types of land, which have different abilities/characteristics that players are able to utilize in order to affect their movement across the board. The tiles can be stacked and removed, which leads to emergent blocking/opening strategies that become increasingly dynamic as the game progresses.