The beauty of the discussions in Diplomacy, the pleasure of gravity control in Half - Life 2, the sensational vertigo of hopping through portals in Portal... none of them are «rewarded», but they are what makes those games excel. (blog.ihobo.com)
In the common, lab - grown plant Arabidopsis, the water - seeking behaviour of roots operates separately from gravity control, he says, and individuals with a stronger version of the water - seeking behaviour grow better in arid conditions. (newscientist.com)
Paperbound combines platforming, twitchy combat, and gravity control in a competitive couch multiplayer environment. (paperboundgame.com)