Feel the bullwhip effect in 20 minutes.
Play one link of a four-stage supply chain. Order the right amount of beer each week — too much ties up cash, too little means backorders. The classic Beer Game, faithfully rebuilt for the browser.
Demo is single-player, runs in your browser. No sign-up needed.
What's in the box
Faithful simulation
Server-authoritative engine with FIFO pipelines, configurable lead-times, step demand, promo events. The same numbers a textbook predicts.
Multiplayer in the browser
Lobby with a 6-character code and a QR poster. Players claim a role and the host starts the game — empty seats play as bots.
Instructor dashboard
Monitor every game live, pause, reset rounds, broadcast messages, inject events, download CSV. The full debrief is one click away.
See it in action
Real screens from the game — try the demo to feel them yourself.
Animated isometric chain
Four sites · trucks rolling between them · per-card stats and a small WIP pipeline strip showing what's arriving next.
▶ Play the demo
Weekly breakdown that teaches the rules
Box-stack stock illustration, colour-coded receipt/demand/shipment numbers, the stock and cost formulas spelled out — and tooltips for every concept.
Debrief that actually debriefs
Bullwhip chart, inventory chart, week-by-week scrubber, par-score benchmark, and specific insights (peak ratio, first backorder, suggested next-round action).
Multiplayer in a single QR code
Share a 6-character code or let players scan the QR. Empty seats play as bots automatically — perfect for a partially-full classroom.
Sign in to host →Host the class from one screen
Recent games, live status, monitor links, CSV exports and the projector view — gated behind a single instructor password.
How a week works
Goods arrive from your supplier.
Your client places an order.
You ship what you can; the rest is backorder.
You decide how much to order from your supplier.
Stock costs $0.50 / case / week · Backorders cost $1.00 / case / week · Lowest total cost wins.
Ready to play?
Hit the demo for a 12-week solo run, or sign in to host a multiplayer game for your class.