Railway Empire 2 from Gaming Minds Studio and Kalypso Media is a game about trains. More importantly, it's a train game that supports 4-player online co-op. Now we're talking! And one thing about train games is that you can never have enough trains in them. Well, there will soon be more trains and more empires to build. The "Industrial Wonders" expansion is due out on June 24, and it will bring the Industrial Revolution with it.