Actor Dan Cortese of "Veronica's Closet" and "Surviving Suburbia" serves as host of the show, which premiered in February under the name "Guinness World Records Gone Wild."
Season 2 is to begin airing on the cable television network later this year.
"For years, Guinness World Records have delighted, astonished and amazed readers with its book of incredible achievements. Now in 'Guinness World Records Unleashed,' the curtain is drawn back to reveal what really goes on when the most unbelievable, jaw-dropping records are attempted. Each attempt is evaluated by Guinness World Records officials, who have the final say over whether a record is broken," truTV said in a news release Thursday.