This paper presents the e-Game (electronic-Generic Auction Marketplace) platform. e-Game is a configurableon-line auction server that supports both human and software agents. A wide range of auction types are currently supported by e-Game. These are parameterized in order to allow users to tailor-make auctions according to their own needs. The main feature of e-Game is that it supports the design, development and execution of market game scenarios involving auctions analogous to those of the Trading Agent Competition (TAC) by third parties. Such game scenarios can be used for conducting research on markets, mechanism design and strategies as well as for educational purposes.