Look at that cute horse! A great game with a touch of humour. Because the processes are not linked, it does lack a little of the bottleneck / theory of constraints aspect of Lean, but their are plenty of opportunities to improve the process. In fact, I expect that the team would be able to come up with two linked subassembly stations as a kaizen, instead of two stand alone stations.
The .pdf for the game includes instructions for all the stations. It is ready to go. All you need is the Lego blocks or equivalent.
Here is an example of the instructions for one of the build stations:
The cumbersome order forms are another place to focus some improvement activities, but they also serve to track the time from order to receive, as the customer has to keep track of this info on the sheet.
Here's a link to the .pdf file: http://www.st-andrews.ac.uk/lean/resources/tools/leanlego/
More Lean resources can be found on the St. Andrews Resources for Change website.