You're Drilling for Oil!

In a few moments, you will see a large lot of land. Under the sand, there may be oil reservoirs. Some reservoirs are deeper or wider than others. You can't know where reservoirs lay just by looking at the sand. The only way to find oil is by drilling, and you will have 10 opportunities to drill. Your success in finding oil will determine your score.

When each round begins, choose a spot for drilling and click "drill" within 15 seconds. Then, you will see the amount of oil you found. The amount is indicated by a colored square and a corresponding bar on the left side of the screen. The higher the bar, the better your performance is.

If there are oil reservoirs under the sand, their locations and sizes are determined before the game begins. During the game, the locations and the sizes are not affected by anyone's actions and do not change.

Competitors will also be drilling for oil. You will see where they drilled, but not how much oil they found.

If you choose to drill in the exact same point is the competitor, you will find the same amount of oil as the competitor.

After everybody has chosen a drilling spot or 15 seconds have passed, you will advance to the next round. If 15 seconds pass and you haven't made a drilling decision, then you will find nothing in that round.

You may play the game up to 10 times. Whenever a new game begins, the locations and sizes of the oil reservoirs, if any, may shift.

Please enter your first name. Your name will be visible to the other players.

Before you begin the game, please answer the following questions.

In this game, you're drilling for --select-- diamonds coal oil gold silver

When competitors drill, you --select-- may may not see where they drill and you --select-- may may not not see how much oil they found, if any.

How many seconds do you have to make a decision? --select-- 5 10 15 20 22.5

The game advances to the next round after
at least two competitors found oil
everybody chose a drilling point
everybody chose a drilling point or 15 seconds have passed
at least 15 seconds have passed
at least one competitor found oil

Which of these statements is true?
The location and size of oil reservoirs is fixed throughout the game.
The location of oil reservoirs is fixed but the size may change during the game.
The size of oil reservoirs is fixed but the location may change during the game.
The size and location of oil reservoirs may change during the game.
The size and location of oil reservoirs can be deduced from the color of the sand.