Students form teams and choose who will go first. They then choose a color/item, and depending on what is behind said color/item they receive points as following:
A treasure chest: +5
A coin: +2
A bomb: -3
A thief: steal 2 Pts from another team
The amount of each item varies per level, with the number of bombs increasing. The thief appears from the fourth level onwards. The first five levels are colors only, and the sixth onwards has a more mixed vocabulary.
As I made many levels, it might be best to move on after the treasure is found each time, as I may have made too many levels. My class split it between two lessons, the first using the color levels only, and doing the rest in a new lesson.
I have rebalanced the game since the original version (too many bombs equals unlucky crying kids :'( ).
As sometimes teams get very unlucky, if the points get very unbalanced I initiate a special event where I play janken with the group with least points and a win equals +5 points and a loss +3.