If you have read (or watched Ender's Game), you're probably familiar with the Battle Room. It's the zero gravity room where two opposing fight with weapons that freeze enemy players in pace when shot.

Physics plays an important role in games since it defines behavior for the player, the world, and any items in the environment. Take that away, and you have a whole bunch of chaos on your hands.

Sharp-eyed people traveling through Burlington’s South End might have noticed a subtle change at 716 Pine Street last week: The Zero Gravity Craft Brewery hummingbird has fluttered over and replaced ...