Aliens
After a while, you can buy the chibi-radar in the shop, found in the Chibi-House.
I'm not sure how expensive it is, but I know it's somewhere around 1,000 moolah.
You have to use the chibi-blaster on the bear sticker on the window leading to the outside and move all of the weeds on a strange pattern in the yard.
Afterwards, step on the shape in the middle of it and use the chibi-radar.
There should be a cut-scene showing a UFO landing in the yard. Step into the light under the UFO, and you'll be taken inside.
There are four aliens. When the aliens come to Earth, they become extremely overheated. So you should squirt them with water to get them to turn back to their original colors. If you have no water, leave the UFO and get some from the yard.
Once you get the super-charge blaster, you should hold down the button that shoots pointing at the force field in front of the strange machine.
If you go inside the machine, it will take you back in time.
I hope this helps.
We have more cheats and tips for this game here, Chibi-Robo cheats
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