1. RobotDogs: barking up the wrong tree
overview: each round
half in each market are buyers; half are sellers
transactions happen
each RobotDog’s barking imposes a nuisance cost equally shared by all
overview: transacting
buy or sell one RobotDog at a time
buyers submit bids: an offer to buy
sellers submit asks: an offer to sell
when bid > ask: we have a sale
RobotDog (Negative)
9Serious games. Seriously fun. 9

2. 9Serious games. Seriously fun.
game screen
information on role and nuisance cost
RobotDog (Negative)
9Serious games. Seriously fun. 9

3. 9Serious games. Seriously fun.
game screen
RobotDog barking
RobotDog (Negative)
9Serious games. Seriously fun. 9

4. 9Serious games. Seriously fun.
game screen
previous prices in this market
RobotDog (Negative)
9Serious games. Seriously fun. 9

5. 9Serious games. Seriously fun.
buyer’s screen
RobotDog value
RobotDog (Negative)
9Serious games. Seriously fun. 9

6. 9Serious games. Seriously fun.
buyer’s screen
slide to desired bid press to submit
RobotDog (Negative)
9Serious games. Seriously fun. 9

7. 9Serious games. Seriously fun.
buyer’s screen
market’s current offers
RobotDog (Negative)
9Serious games. Seriously fun. 9

8. 9Serious games. Seriously fun.
buyer’s screen
buy button
RobotDog (Negative)
9Serious games. Seriously fun. 9

9. 9Serious games. Seriously fun.
seller’s screen
RobotDog cost if you sell. personal nuisance cost.
RobotDog (Negative)
9Serious games. Seriously fun. 9

10. 9Serious games. Seriously fun.
seller’s screen
slide to desired ask press to submit
RobotDog (Negative)
9Serious games. Seriously fun. 9

11. 9Serious games. Seriously fun.
seller’s screen
market’s current bids
RobotDog (Negative)
9Serious games. Seriously fun. 9

12. 9Serious games. Seriously fun.
seller’s screen
sell button
RobotDog (Negative)
9Serious games. Seriously fun. 9

13. 9Serious games. Seriously fun.
summary
you buy a RobotDog if
you click Buy at the Lowest Ask, or
you have the highest Bid and a seller accepts highest bid
you sell a RobotDog if
you click Sell at the Highest Bid, or
you have the lowest Ask and a buyer accepts lowest ask
RobotDog (Negative)
9Serious games. Seriously fun. 9

14. 9Serious games. Seriously fun.
payoffs
buyer: each RobotDog you buy
payoff = RobotDog value − price paid – personal nuisance cost
seller: each RobotDog you sell
profit =  price fetched − RobotDog cost – personal nuisance cost
nuisance cost from others
others' RobotDogs × Personal Nuisance Cost
RobotDog (Negative)
9Serious games. Seriously fun. 9

15. 9Serious games. Seriously fun.
payoffs
buyer: each RobotDog you buy
payoff = RobotDog value − price paid – personal nuisance cost
seller: each RobotDog you sell
profit =  price fetched − RobotDog cost – personal nuisance cost
nuisance cost from others
others' RobotDogs × personal nuisance cost 
remember
total payoff: sum of payoff/profit from transactions minus nuisance cost imposed by others
value (or cost) of each item indicated on your screen
a negative number is smaller than zero!
RobotDog (Negative)
9Serious games. Seriously fun. 9

16. 9Serious games. Seriously fun.
payoffs: an example
consider 1 transaction.
value to buyer: $2
cost to seller: $1 
price agreement: $1.75
group size = 10
community nuisance: $0.50 per RobotDog 1 transaction
price paid=$1.08
value to buyer = $1.32; cost to seller = $0.74
buyer
value −
price
nuisance cost =
payoff
$1.32
$1.08
$0.30
−$0.06
seller
cost
$0.74
$0.04
RobotDog (Negative)
9Serious games. Seriously fun. 9

17. payoffs: an example consider 1 transaction. group size = 10
value to buyer: $2
cost to seller: $1 
price agreement: $1.75
group size = 10
community nuisance: $0.50 per RobotDog 1 1 transaction
price paid=$1.08
value to buyer = $1.32; cost to seller = $0.74
buyer
value −
price
nuisance cost =
payoff
$1.32
$1.08
$0.30
−$0.06
seller
cost
$0.74
$0.04
buyer
value −
price
personal nuisance cost =
payoff
$1.32
$1.08
$0.05
−$0.06
seller
cost
nuisance cost
$0.74
$0.04
RobotDog (Negative)
9Serious games. Seriously fun. 9

18. Payoffs: an example consider 1 transaction. group size = 10
value to buyer: $2
cost to seller: $1 
price agreement: $1.75
group size = 10
community nuisance: $0.50 per RobotDog transaction
price paid=$1.08
value to buyer = $1.32; cost to seller = $0.74
buyer
value −
price
nuisance cost =
payoff
$1.32
$1.08
$0.30
−$0.06
seller
cost
$0.74
$0.04
buyer
value −
price
personal nuisance cost =
payoff
$2.00
$1.75
$0.05
$0.20
seller
cost
$1.08
$0.74
$0.04
RobotDog (Negative)
9Serious games. Seriously fun. 9

19. payoffs: an example consider 1 transaction. group size = 10
value to buyer: $2
cost to seller: $1 
price agreement: $1.75
group size = 10
community nuisance: $0.50 per RobotDog 1 transaction
price paid=$1.08
value to buyer = $1.32; cost to seller = $0.74
buyer
value −
price
nuisance cost =
payoff
$1.32
$1.08
$0.30
−$0.06
seller
cost
$0.74
$0.04
buyer
value −
price
personal nuisance cost =
payoff
$2.00
$1.75
$0.05
$0.20
seller
cost
profit
$1.00
$0.70
RobotDog (Negative)
9Serious games. Seriously fun. 9

20. payoffs: an example happy playing! keep in mind for total payoff
sum the payoff/profit from all your transactions
subtract nuisance cost you incur from others' transactions
1 transaction
price paid=$1.08
value to buyer = $1.32; cost to seller = $0.74
buyer
value −
price
nuisance cost =
payoff
$1.32
$1.08
$0.30
−$0.06
seller
cost
$0.74
$0.04
buyer
value −
price
personal nuisance cost =
payoff
$2.00
$1.75
$0.05
$0.20
seller
cost
profit
$1.00
$0.70
RobotDog (Negative)
9Serious games. Seriously fun. 9