**1. Introduction**

The Institution for Statutory Accident Insurance and Prevention for Raw Materials and Chemical Industry has more than 34,000 member enterprises in Germany with about 1.6 million insured persons. Learning and training that aims at accident prevention are of high societal significance.

Gamification is an approach to make conventional learning and training more attractive, even more effective. In particular, the authors present concepts of virtual time travel and implementations as well as applications.
