I remember the object of the game was to build a tower 100 mystery units tall. You had i think 5 cards at all times and once per turn you would play a card. The cards would give you something like 7 to tower height and removes 3 from your enemy's tower. First to 100 wins. You could also build walls so they wouldn't attack your tower until the walls were destroyed. It was a lot of fun and I can't seem to find it. Thanks in advance.