In Streams Cross, players aim to score points by filling out a cross shaped grid with numbers. Players earn more points for longer sequences where numbers do not decrease. The game presents two rule sets for determining how the numbers are chosen. In one, a set of dice are rolled (with a different amount rolled depending upon the round). In the other, the players' finger(s) are used. In either case, after the players have filled out 20 numbers, they sum their points and the player with the most points wins.