Among Us is a murder-mystery game in which players take on one of two roles: the Impostor(s), whose goal is to kill everyone, and the Crewmates, which have the job of fixing the ship and voting the impostor(s) out.
As a crewmate, your goal is to complete randomly assigned tasks without being killed by the imposter. Crewmates should also be on the lookout for suspicious (often referred to as "sus") or incriminating behavior. This may include murdering other crewmates, pretending to do tasks, sabotaging different areas, or using suspicious dialogue during emergency meetings.
If an emergency meeting is called, crewmates will have the opportunity to vote on who they think might be an imposter. Whoever gets the most votes is ejected from the ship.
As an imposter, you are an alien that has infiltrated the crew. Your goal is to kill as many crewmates as possible without being detected. As an imposter, you cannot complete tasks as crewmates can. However, imposters do have a few unique skills. They can sabotage certain areas of the map.
Sabotaging the map allows you to set traps, draw crewmates away from bodies, or create critical malfunctions that will kill the crewmates if they are not repaired in time.
If all imposters are ejected from the ship, or all tasks are completed, the crewmates win.
If the imposter(s) murder enough crewmates to where there is an equal number of imposters to crewmates, imposters win.