The Professor Layton series follows an English gentleman solving brain teasers and occult mysteries with his apprentice Luke. The Ace Attorney series follows lawyer Phoenix Wright as he breaks down the logical flaws in witnesses' testimonies to protect his clients and uncover the truth in a court of law. At first glance they might not seem all that similar. But upon closer inspection, they both revolve around one simple concept: challenging your very ability to think. And it is this very reason that Professor Layton vs. Ace Attorney is one of the best crossover games ever made.