Forza is the best racing game on Xbox. Yes, it has had minor DLC released over the years, but the game itself has never been priced higher than $19.99. Yes, it doesn't feature the latest and most remarkable technologies from Microsoft. Still, their track record with racing games is awe-inspiring, and Forza has been a favorite among fans for its time-based championships and huge map. Recently, I've discovered
Forza Horizon 5 Mobile. It's also fascinating and realistic. I always play it when I am bored at work.