ISIS has released a trailer for an upcoming propaganda video threatening attacks on the United States.

The clip from 'Flames of War II: Until the Final Hour' shows bombs raining down over a U.S. map, and prisoners being made to dig graves.

The title of the video is shown in huge video-game style letters rising from the flames of a battlefield.

Braggadocios: The trailer for the video makes a series of claims, such as ISIS being strong on the battlefield, being responsible for the Vegas attack and threatening the U.S.

In the video, ISIS brags about its strength in battle, despite having been defeated in Iraq and lost nearly all its territory in Syria.

It also continues to claim that Las Vegas shooter Stephen Paddock was associated with their terror organisation, although there has been no evidence what so ever to support this claim.

A map of the U.S. shows cities that have recently suffered terror attacks, including New Tork and Florida, with bombs seemingly targeting them, PJ Media reports.

The trailer emerged on encrypted channels on Wednesday, urging ISIS supporters to download the full video either in Arabic or English.

Attacks: Bombs appear to be falling on the U.S. with cities including New York and Los Angeles are marked on the map

True to style: The video also shows prisoners digging what appears to be graves

It appears to be a sequel to the infamous 'Flames of War'-video from 2014, which warned President Obama of 'carnage' if he deployed more troops in Iraq.

The trailer also singles out its Egyptian enclave Wilyat Sinai as a key player in an 'Islamic apocalypse'.

ISIS-affiliate has been leading an Islamist militant insurgency in northern Sinai, which borders the Gaza Strip and Israel, for several years.

Wilyat Sinai, meaning the Sinai Province, pledged allegiance to ISIS leader Abu Bakr al-Baghdadi in 2014 and has carried out several terror attacks under the black Islamic State flag since.