This is a variation of the rock, paper, scissors game that Earth children play. Two fingers represent sticks which defeat the hammer (presumably by poking the bearer of the hammer in the eyes), the hammer (fist) trumps fire by beating it out, and fire (three fingers) defeats sticks by burning them.
This game involves bouncing a ball of arshen slime, picking up a gradually increasing number of sticks, and hurling them into chalk outlines. At more advanced levels the sticks are graduated to daggers which are thrown into the chalk outlines on the earth.
Rattle Bones is a common Martian dice game that is played with five eight-sided dice carved with various symbols and runes. Traditionally these dice were carved from bones of the enemy, though they are sometimes carved from wood or even stone. Originally some priests or shaman of Galbran and pagan tribes used these dice for divination and when all dice turned to show a skull, that was considered to be a sign of death, and became known as “death’s throw”. Often this meant that prisoners would be killed or sacrificed instead of meeting some slightly less horrible fate.