Tourist Trophy is A Worthy Successor to Gran Turismo
The game has the same menu styles and sound effects, and courses from Gran Turismo 4. But why do we always need originality? It is unique with the Gran Turismo style menus, and a wide selection of fast and good looking speed bikes, with good color changes, and biker suit changes. It's pretty fun, but the controls on the brakes are a bit irresponsible, and you'll end up seeing your driver fall off the bike.
The license tests are a bit easier than GT's license tests, but races are pretty hard. But it's still a worthy try, it may not last as long as the GT games, but Tourist Trophy is sure worth it.