The game at first glance appears to be only a cosmetically improved A-Train: the graphics are now in vibrant SVGA, with amazing depiction of various weather conditions (rain, snow, etc.) and passage of time. As an old saying goes, though, beauty is only skin deep, and fortunately AIV Network$ packs enough gameplay and excruciatingly realistic details to please even the most perfectionistic of business tycoons. The stock market model in A-Train, for example, has been greatly expanded and improved. You can now trade more stocks than ever before, and there are many random elements (e.g. recessions) that have a real impact on your portfolio. On the train management side, A-Train's great routing system has been greatly expanded: you can now not only plan each train's route, but also choose how long the train should stop at each station, how much load to pick up, and so on. You can even plan a complete maintenance schedule, and speculate in many more building types. As the game is set in Japan (where real estate is possibly more expensive than the Moon), buying and selling land and buildings can make you a billionnaire if the timing is right.

Overall, AIV Network$ is a very deep, complex, and thorough railroad business simulation. Beginners and casual gamers should play Transport Tycoon Deluxe instead due to the game's extremely steep learning curve and somewhat "dry" presentation. On the other hand, if you're a diehard business sim fan like me who cut teeth on stock market simulations, or want to micro-manage your rail empire without escaping any detail, AIV Network$ is the best there is. Highly recommended!