There is no such things as friends in a diamond cave! This expansion for Diamond is definitely full of surprises! Steal your opponent’s rubies with the Betrayal Module and deploy the Warning Module to taste the real danger with each new round! Two modules included in this small box for two new mechanics. Change the rules every round with the warning tiles or trick your opponents with the betrayal cards! Contents: 8 Betrayal Cards 8 Warning Tiles 1 Rulebook