I played Meet The Robinsons, it's a fun game, not to mention that the graphic is just jaw dropping for the DS, it's comparable with Metroid, with perfect framerate.
Starts a bit boring but picks up as you fight bigger hordes of enemies and builds more gadgets and weapons.
The gameplay reminds me of Megaman Legends, as you can shoot infinitely with the main gun, charge your shot, and will lock-on and run around robots shooting them.
The bad point is that its short, only 4 worlds and bosses, but they are fun, and the last one is quite challenging.
Other possible issue is learning a good way to control.
Personally, i use d-pad + stylus, as you have access to all functions like camera and lock-on, and can still press the 3 circles to shoot your weapons like they were buttons (to roll, you touch the character).
If you use only d-pad and buttons, you will need to move camera up and down and lock-on enemies with finger, which is annoying and slower (can screw you in bosses).