Top Definition
When playing on a laptop, tilting the screen forward and backwords causes the lighting of the game to lighten or darken. Similar to the Gamma function on most games. Ghetto Gamma is for those too lazy to pause the game and open up the menu when something is too dark or too bright.
I had to work my Ghetto Gamma when I came from the dark cave into the bright desert.
by Lord Damon April 04, 2010
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