Touch Detective (known as Mystery Detective in Europe and Osawari Tantei: Ozawa Rina (おさわり探偵 小沢里奈)) is an adventure game developed by BeeWorks and published by Atlus (505 Games in Europe and Success Corporation in Japan) for the Nintendo DS in 2006. It follows the story of Mackenzie, who sets herself on solving 4 different cases to solve in order to join the Great Detective Society. She also maintains a Touch List, keeping track of interesting things she touches throughout.

Darkman425 completes the 4 cases in record time.