BullwhipSim — Beer Game Supply Chain Simulator

5/20 rounds

Playing as Retailer

Retailer

Sells directly to end customers. Closest to real demand — least amplification.

Round

5/20

Inventory on Hand

32units

4 from last roundHealthy buffer

Backlog

0units

0 unitsNo unfilled orders

Incoming Order

8units

4 vs last roundFrom downstream partner

Total Cost

$60

Hold: $16.0 · Out: $0.0

Overreaction detected — Bullwhip amplified!

You ordered significantly more than what you received. This is the classic overreaction pattern that drives the Bullwhip Effect. Your excess order will arrive just as demand normalizes, causing a future inventory glut.

Bullwhip Effect Principle: Each tier of the supply chain amplifies order variability. Your overorder will be seen as a demand surge by your upstream partner, who will overreact in turn.

Bullwhip Amplification

Order variance vs customer demand — all roles

⚡ 9.6× amplification

Your Order History

Retailer — orders placed each round

Cumulative Cost Comparison

All roles — who is managing costs best?

Leaderboard

Lower cost = better

Your ranking

#9/9

Your total cost

$588

🥇

Priya Sharma

Retailer

$39

$4.0

🥈

Jordan Kim

Factory

$52

$7.5

🥉

Ngozi Okafor

Distributor

$61

$6.0

Marcus Webb

Wholesaler

$75

$9.5

Aiko Tanaka

Retailer

$81

$8.0

Carlos Reyes

Wholesaler

$93

$11.0

Fatima Al-Hassan

Distributor

$108

$14.5

Dmitri Volkov

Factory

$128

$18.0

You (you)

Retailer

$588

$0.0

Your Cost Breakdown

Retailer

$588

Wholesaler

$832

Distributor

$1087

Factory

$1366