Forza is a deep and challanging racing experience.
Forza Motorport is a simulation racing game. In it you can choose from numerous different modes, the most prominent being the single player game. You start with a class C car (The games cars are split into D,C,B,A,S and R which is split into GT, GTR and P1. You complete races to earn money and new cars, Pretty standard fare. You can also customize your cars making them more powerful and cooler to look at. There are thousands of exterior combinations. R level cars cannot be modded but almost all other cars can be altered in some way. As your cars increase in power you will find it easier and easier to complete lower level races. Soon though higher level races will unlock and you'll be forced to buy and upgrade again. The actual racing is very enjoyable. Cars control well enough and opponent AI is superb. This is a challenging racing game. There are numerous different handicaps and difficulty levels to ease your way into the game though. You can also train a drivitar to complete races for you if you get tired of toughing it through the game. Overall this mode will take you about 60 hours to complete and then theres time trials, single races and multiplayer. All of these modes are tons of fun, and time trials will be uploaded to online scoreboards. Very fun and addictive stuff.
Graphics in this game are about average. They're not distracting, but they're nothing to scream about either.
Music is pretty dull, but the game supports custom soundtracks so this is a rather moot point. Engine and wheel sounds are very good.
Overall Forza is a great game. It is challenging and fun and will take weeks to complete, after which which you have multiplayer races and time trials to enjoy.