At one point in our demonstration of LittleBigPlanet, someone asks a simple question about the physical interaction of the materials you can use to create stuff in its sticky-back-plastic platform-game world. It's answered, wordlessly, by level designer Dan Lewis. In a minute or two, he creates a constellation of blocks of concrete, wood and sponge hanging in mid-air. Then he exits edit mode - effectively un-pausing the game - and they crash to earth convincingly, tumbling, bouncing and squashing each other.
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First Impressions: Eurogamer