From GameBrew - a wiki dedicated to Video Game Homebrew.
Blobb DS is a homebrew game inspired by The Sims and Nintendogs. It is aimed to make the game with as much customizable contents as possible.
The latest version 0.5 is a work in progress.
Download and extract file.
Copy everything to the flash card.
The objective is to look after a strange animal called Blobb.
Up/Down - Change selected object number (object you are going to select)
D-Pad - Move selected object
Touchscreen - Make Blobb go to the point of the map you tell him
A - Select object
B - Fix object selected
Start - Switch on/of the lights
Select - Create new object
Select+L - Reload room
Select+R - Save objects state (can reload while you load the game if hold A)