I recently purchased this game on my Nintendo 3DS via the e-shop. It was about $7 and so far its been worth it. The game is called freakyforms and it lets you create your own creature called a “formee”. After creating your formee you get to explore and do quests and find treasure. You can also share formees via streetpass (If you are around another person with a 3ds with the game data gets transferred).
Here are some of the formees I’ve created. IF you have the game yourself you can use the QR code to get them. Also I’m horrible at naming things.