Jamaican Heat is a Grand Theft Auto IV missioon given to Niko Bellic by his cousin Roman. Roman is on the phone when Niko arrives at the taxi depot on Cisco Street in Schottler, Broker. Roman asks Niko to get Little Jacob from Oneida Avenue in South Slopes. Jamaican Heat introduces handguns and the cover system. Submachine guns are also seen later in the mission.

• Niko gets Little Jacob in the taxi.
• Little Jacob needs Niko to head over to Dillon Street in Schottler. 
• Roman told Little Jacob that Niko is familiar with weapons, so Jacob wants him to accompany him to a meeting, and provides him with a handgun for protection.
• Jacob expects only one gang member, but three arrive and immediately open fire.
• Niko then returns fire. 
• Once the first three gang members are dead, another shows up on the roof. 
• Shoot the gang member off the roof.
• Escape through the alley.
• Jacob provides Niko with his telephone number so they can stay in contact and work together in the future.
• Drive Jacob to the Homebrew Cafe to end the mission and earn $150.
• Uncle Vlad and Concrete Jungle are now unlocked.