Toca Driver 3(I have all the driver series games)is abit older and is on the regular xbox, I really like the game. Not like forza at all really, a great sim if you want it to be but you can change settings to make it easier to play. Its all race series' though, not like forza where you buy cars and tune them. It has these types of series' in it, Classics, GT, Oval, Touring Car, Off-Road, Open Wheel, TMS(time trial events) and Honda which has the Ariel(sp) cars, 4-wheelers, civics and even Lawnmowers. Its a fun game, one thing about Codemaster games is if you want cheats you better be willing to fork up 5.49$. At first when the game came out over a year ago I hated it but now when you think about it you can probably get the game for like 10-15$ and than add that you still have it for way cheaper than it was new. Only way to unlock all championships and things like boost and invincible cars. To get the honda tier you just go to a link the game tells you too and enter your unique id(every game is not the same, meaning you cannot use someone else codes).
In my opinion its probably alittle funner than Forza because you have to race the same type of car, can allow or not allow tuning before race and all that so than it comes down to drivers skill. Nothing against Forza, thats a great game, I just do not like the online play cause even if my car is soo awesome in career mode it just literally blows online haha.