My company has used the 4-hr lego simulation game by TEIM Inc. with great success. After receiving a train-the-trainer course from the owner, we immediately trained ~500 site employees. Sister sites in the US and Europe (English speaking) also bought a kit, received their train-the-trainer instruction, and had similar success. I haven't seen or used any kits from other suppliers, so I can only speak to the TEIM Level 2 Simulation. Good luck in training! The intial site training of ALL employees, including resident contractors, is considered one of our critical key success factors in our early implementation efforts. We also continue to offer the course on a ~quarterly basis as new employees join our organization. Elmar is preventing an attached link, but you check out the information at TEIMINC.com