TRAGEDY OF THE COMMONS GAME

Test Gamertwo's Game Web Page

Welcome, Test! This is your Web Page for playing the Tragedy of the Commons Game. During the course of the game, please stay on this page. Good luck and enjoy!

Some facts to remember:

Cows cost $100 each.
Each round you start with $10,000 (so, if you enter more than 100 cows, only 100 cows will be put on the commons).
Your profits will be determined by how fat your cows are at the end of the year. That will depend on the following:

How many cows you put on the commons.
How many cows other ranchers put on the commons.

You CAN lose money, since your cows cost $100 each. If the commons is seriously overgrazed, your cow will die.

CLASS RESULTS

Interpreting the commons picture:

The green area is the size of the commons. When just filled with cows, the collectively optimal number of cows is on the commons. Green area without cows indicates that grazing MORE cows would increase community milk production. Grey cows indicate that too many cows are being grazed and grazing FEWER cows would increase community milk production.

Details of Round 1
               No. of  Revenue   Profit
Name            Cows   or Loss   Per Cow
Gamerone, Tes     10    -1000    -100
Gamertwo, Tes    100   -10000    -100

 Summary of Round: 1
                     Actual         Optimal*
* = optimal would max total milk production
Farmers:               2        No optimal #
Cows:                  110             40
Total milk:       $ -11000.00       $ 8000
Milk/rancher:     $ -5500.00       $ 4000

Details of Round 2
               No. of  Revenue   Profit
Name            Cows   or Loss   Per Cow
Gamerone, Tes     20     2000     100
Gamertwo, Tes     40     4000     100

 Summary of Round: 2
                     Actual         Optimal*
* = optimal would max total milk production
Farmers:               2        No optimal #
Cows:                  60             40
Total milk:       $ 6000.00       $ 8000
Milk/rancher:     $ 3000.00       $ 4000

Details of Round 3
               No. of  Revenue   Profit
Name            Cows   or Loss   Per Cow
Gamertwo, Tes     50    -5000    -100
Gamerone, Tes     50    -5000    -100

 Summary of Round: 3
                     Actual         Optimal*
* = optimal would max total milk production
Farmers:               2        No optimal #
Cows:                  100             40
Total milk:       $ -10000.00       $ 8000
Milk/rancher:     $ -5000.00       $ 4000

Details of Round 4
               No. of  Revenue   Profit
Name            Cows   or Loss   Per Cow
Gamerone, Tes     25     3750     150
Gamertwo, Tes     25     3750     150

 Summary of Round: 4
                     Actual         Optimal*
* = optimal would max total milk production
Farmers:               2        No optimal #
Cows:                  50             40
Total milk:       $ 7500.00       $ 8000
Milk/rancher:     $ 3750.00       $ 4000

Details of Round 5
               No. of  Revenue   Profit
Name            Cows   or Loss   Per Cow
Gamertwo, Tes     40        0       0
Gamerone, Tes     40        0       0

 Summary of Round: 5
                     Actual         Optimal*
* = optimal would max total milk production
Farmers:               2        No optimal #
Cows:                  80             40
Total milk:       $ 0.00       $ 8000
Milk/rancher:     $ 0.00       $ 4000

Details of Round 6
               No. of  Revenue   Profit
Name            Cows   or Loss   Per Cow
Gamertwo, Tes     30     3000     100
Gamerone, Tes     30     3000     100

 Summary of Round: 6
                     Actual         Optimal*
* = optimal would max total milk production
Farmers:               2        No optimal #
Cows:                  60             40
Total milk:       $ 6000.00       $ 8000
Milk/rancher:     $ 3000.00       $ 4000

Details of Round 7
               No. of  Revenue   Profit
Name            Cows   or Loss   Per Cow
Gamerone, Tes     35     1750      50
Gamertwo, Tes     35     1750      50

 Summary of Round: 7
                     Actual         Optimal*
* = optimal would max total milk production
Farmers:               2        No optimal #
Cows:                  70             40
Total milk:       $ 3500.00       $ 8000
Milk/rancher:     $ 1750.00       $ 4000

Details of Round 8
               No. of  Revenue   Profit
Name            Cows   or Loss   Per Cow
Gamertwo, Tes     33     2310      70
Gamerone, Tes     33     2310      70

 Summary of Round: 8
                     Actual         Optimal*
* = optimal would max total milk production
Farmers:               2        No optimal #
Cows:                  66             40
Total milk:       $ 4620.00       $ 8000
Milk/rancher:     $ 2310.00       $ 4000

Details of Round 9
               No. of  Revenue   Profit
Name            Cows   or Loss   Per Cow
Gamerone, Tes     37     4348     118
Gamertwo, Tes     12     1410     118

 Summary of Round: 9
                     Actual         Optimal*
* = optimal would max total milk production
Farmers:               4        No optimal #
Cows:                  113             80
Total milk:       $ 13277.5.       $ 16000
Milk/rancher:     $ 3319.37       $ 4000

Details of Round 10
               No. of  Revenue   Profit
Name            Cows   or Loss   Per Cow
Gamerone, Tes     20     4000     200
Gamertwo, Tes     20     4000     200

 Summary of Round: 10
                     Actual         Optimal*
* = optimal would max total milk production
Farmers:               2        No optimal #
Cows:                  40             40
Total milk:       $ 8000.00       $ 8000
Milk/rancher:     $ 4000.00       $ 4000

Details of Round 11
               No. of  Revenue   Profit
Name            Cows   or Loss   Per Cow
Test, Gamerth     10     2833     283
Gamertwo, Tes     10     2833     283
Gamerone, Tes     15     4250     283

 Summary of Round: 11
                     Actual         Optimal*
* = optimal would max total milk production
Farmers:               3        No optimal #
Cows:                  35             60
Total milk:       $ 9916.66       $ 12000
Milk/rancher:     $ 3305.55       $ 4000

Your Results So Far:

               No. of  Revenue   Profit
                Cows   or Loss   Per Cow

                100   -10000    -100
                 40     4000     100
                 50    -5000    -100
                 25     3750     150
                 40        0       0
                 30     3000     100
                 35     1750      50
                 33     2310      70
                 12     1410     118
                 20     4000     200
                 10     2833     283

This game was created by:
Ronald Mitchell
Department of Political Science
University of Oregon
Eugene, OR 97503-1284
Tel: 541-346-4880
Email: rmitchel@uoregon.edu
Web: http://pages.uoregon.edu/rmitchel
© Ronald Mitchell, 1998-2003