Yes in that world there are no nuclear power plants or combustion, they use elebits from caveman days, the little guys get away and you have to find them, the more elebits you have the more wieght you can pick up, from a toaster to your entire house, this is probably more of children game or for people who like the sims maybe.
Heh for once we're in accord Haku, basically the elebits are used as electricity to power the appliances e.g. microwaves. They however seem to have gotten a bit pissed at being taken for granted and have done one (ran away) they've hidden and you can use the remote to pick up items, throw them around and then zap (shoot) the elebits you uncover with your gun powering up the weapon and allowing you to pick up bigger and bigger objects like tables, cars and eventually houses (as seen in some of the screenshots)
The movie on IGN is so funny XD I had it on my E3 dvd but it got to the bit where it says "...But you know what?" then crashes.
Here's a link to a bit of blurb and 2 vids and some pics from IGN