Professor Layton vs Ace Attorney is a cross-over game of the two series and was released in 2012 for the Nintendo 3DS.

Its pretty cool that a crossover game was made and that it combines gameplay elements from both series but not so cool that it is a Japan only game so far while both series are pretty popular in the USA and Europe too.

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Selected Professor Layton vs Ace Attorney Fan Art featured on Game Art HQ

Professor Layton vs Ace Attoney by_realnoir13

Badass Finger Pointing