Hazards are objects in a game that cause danger to the player's character if made contact with. Often in Nitrome games, they are characterized by their immobility and lack of a face, and often cover great areas of the game. Although hazards are often immobile, there are a moderate amount of hazards that can move.

Certain Nitrome games such as the Skywire series and Hot Air series contain characters that would be categorized under hazards because they cannot be killed, however, these characters are categorized under enemies instead of hazards because these enemies have a face and also perform actions different from regular hazards.