Brown, who had knee surgery to repair a torn meniscus in July, had a team-best 25 points off the bench, while Warren scored 20 in a starting role.
The Pack trailed 23-21 after the first of four periods, but Brown entered the game, sparking the offense and creating defensive problems for Torrejon with his quickness. NC State outscored Torrejon, 24-16, in the second period to take a 45-39 lead at the intermission.
Coming out of the halftime break, Scott Wood knocked down three straight 3-pointers to push the State advantage to 56-45. Wood finished the night with 21 points.
The Pack continued to push the pace and extended its lead to 72-57 by the end of the third period. The host, however, would not go away. A combination of missed opportunities from the field and at the line allowed Torrejon to claw its way back into the contest, cutting the score to 79-74 with a little under three minutes left the game.
NC State fought of the rally with a bucket by Warren and free throws by C.J. Leslie and Tyler Lewis.
Head coach Mark Gottfried said it was good start for his team, but said the ultimate goal is the get a jump on the upcoming season.
"There's so much to learn with a team when you start in October," said Gottfried. "Sometimes it's four or five games before you learn about you team. The nice thing about having these games is, like tonight, the score and time became an issue and we had T.J. and Tyler on the floor and I wanted Tyler on the floor, so he could learn from that situation.
"It's a great trip for these young guys."
Leslie had 10 points for the Wolfpack, while Tyler Lewis had three, Richard Howell had two, Jordan Vandenberg and Thomas DeThaey each scored a point apiece.
NC State faces C.B. Torrejon again on Wednesday night. Game time is 7 p.m. locally and noon on the Eastern time. Pack fans can hear the game on 99.9 The Ticket, HD radio or at WRALsportsfan.com.