Managing today's multi-actor systems, such as supply chains, is becoming an increasingly challenging task given developments in the markets, e.g. globalization, and in technology, e.g. the Internet. Today's managers are faced with increasing competition and globalization in an ever increasingly complex and dynamic system. Multiple tools exist to support managers in gaining more insight into these kinds of systems, such as simulation models or case-studies. Business games are another tool that can be used to support managers. A leading question in the development and usage of business games concerns the effectiveness of these two activities, e.g. development may take too long, or the business game does not address its intended purpose. During this research we have designed and implemented a suite of software services that support the development and usage of business games in a distributed, Internet-mediated context. With the games we support players in getting prepared for today's management challenges. This is among others accomplished by supporting the games to be played in a continuous fashion, and the usage of computer-controlled actors to increase the games' complexity and dynamics. The games that we developed with this suite have been played at numerous universities and business schools in a variety of settings, among which a global competition played at the same time with 11 universities. The students' educational levels that played the games developed with our suite vary from undergraduate to (Executive) MBA. The games that have been developed with our suite can be accessed online and played with at http://www.gscg.org.