TOKYO -- One of the neatest-looking PlayStation 3 downloadable games at Sony's booth was Gomibako, which means "trash can."

It's basically Tetrisplayed with trash. You have to load up a trash can with thrown-away crap, one at a time. You're attempting to stack them up such that you don't leave any empty space, and can thus fit a lot more inside. But you can also smash items down into the can, breaking them or breaking the things they land on.

Every once in a while, you get a sword that is on fire, and this is how you clear out items from the can. Sticking the fire into a wooden or paper object will set it ablaze, and if you can line up a chain reaction, you can clear out a lot of the crap in your trash can and start again. Eventually, you have to start fitting in really huge items, and this is how you can lose the game -- if your can gets too full and three items fall out, you're done with the level.

There are also some items marked mottainai ("wasteful"), and these you have to be careful of, placing them in the bin gently so that the workers can remove them. The realistic physics are what make it feel more interesting than your average falling-stuff puzzle game.

At the end of a level, you get "Eco" and "Ego" points based on the good and bad things you did, respectively. These are added up and you'll be graded on your performance. Gomibakowas a whole lot of fun. Please look forward to it.

Image: Sony