Simple and repetitive, but if you like the formula the gameplay that's not a bad thing.

User Rating: 8 | Mystery Case Files: MillionHeir DS
Mystery Case Files: MillionHeir is a very well put-together Where's Waldo picture finding game. You are a detective investigating the disappearance of a rather popular and messy millionaire. You'll investigate an extensive and ever expanding list of people who had contact with our missing millionaire, and piece together his relationship with every one of them.
The gameplay is really very simple, most of it is made up of finding certain objects within a large scene filled with a ton of out-of-place clutter and random things. For every person you investigate, a certain number of items must be found to progress, and those items are spread across multiple scenes. As you advance, you'll gain access to such items as a flashlight for finding things in the dark, an x-ray device for seeing through objects, goggles for seeing through water, and a 'super straw' for blowing away debris via the DS's microphone.
Overall it's a very simple game that doesn't require a whole lot of thought. Some will find it boring, I'm sure, but if you like simple find-the-object games, you'll like MillionHeir, for it certainly is one of the flashiest and high quality ones to date.