Pocket/MTV Books promised the venture would showcase "gritty" stories and cover much of the same terrain as 50 Cent's raps.
"These tales will tell the truth about The Life; the sex, guns and cash; the brutal highs and short lives of the players on the streets," the publisher said in a release over the weekend.
The G-Unit Books line of street fiction will feature G-Unit members Lloyd Banks, Tony Yayo, Young Buck and Olivia as characters, the release said.
Nikki Turner, author of "The Glamorous Life" and "A Hustler's Wife," will pen the line's first novella. It is set to be published in 2007.
50 Cent, whose real name is Curtis Jackson, was recently criticized by community groups in Philadelphia and Los Angeles for billboards promoting his semi-autobiographical movie, "Get Rich or Die Tryin'." The ads featured an image of him holding a gun in one hand and a microphone in the other.