Due to a bug, while the dead bodies are revealed in an emergency meeting that An Impostor called, other Impostors see the name as white. The Impostor(s) will win if the oxygen is depleted or the Reactor is sabotaged. It is left ambiguous whether the Impostor(s) actually survive such an outcome, or if they are instead claiming victory through a suicide mission. Whilst we will do everything we can to meet the delivery times above, there may be factors outside of our control and we cannot guarantee delivery within this time frame. If An Impostor or all Impostors disconnected, a screen and sound would play to the Crewmates, with the message: "Impostor Disconnected" and a sound effect playing, indicating a stalemate. This sound and screen were subsequently removed, but were reinstated in version 2022.12.8.

One or more of your Crewmates has been replaced with dangerous shapeshifters – Impostors. Their goal is to eliminate the rest of the crew before the ship reaches home. The Impostors will sabotage the ship, sneak through vents, deceive, and frame others to remain anonymous and kill off the crew. Walnut Creek, Calif. (February 15, 2022) – Following last month’s release of Among Us: Crewmate Edition, Maximum Games, Innersloth, and Dual Wield Studio today announced that Among Us: Impostor Edition and Among Us: Ejected Edition will be launching in the US and Canada on April 19, 2022 and in Europe, UK and Australia on May 31, 2022.Cross-platform: Play with your friends between PlayStation, Xbox, Nintendo Switch, PC, Android, and iOS! If there are still other Impostors remaining after one is ejected, that Impostor will become a ghost. However, if no Impostors remain alive, the Crew wins immediately. Ghost impostors can still Sabotage the map to help their fellow Impostors win, but they cannot kill, talk with other living Impostors, vent, or vote. Depending on the game options, there can be one to three Impostors in a game. Impostors are randomly chosen when the game begins. Therefore, every player has an equal chance to be The Impostor. This chance does not change regardless of any player's record as An Impostor or Crewmate or their color; it is consistently random between all players. In the image files, graphics for the seeker venting can be found even though venting is normally disabled for Seekers.

In an older version of Among Us, the title cards for both Impostors and Crewmates were in sentence case. It was changed to be in all capital letters in a later update. Impostors can kill Crewmates. Killing a Crewmate leaves a dead body in the spot they were killed, and the Crewmate turns into a ghost. Kills have a cooldown of 10–60 seconds and a kill distance of either short, normal, or long, depending on the game's options. Impostors also appear to have the same heart rate as Crewmates, as shown by Vitals' readings on Polus and The Airship. All Impostors cannot complete any tasks; however, they are given a fake task list as general guidance on feigning a Crewmate's behavior and blending in with them. Additionally, Impostors have the ability to Sabotage to force Crewmates to resolve issues, with some killing all Crewmates if not resolved in time. This ability can be used in many different ways, such as luring Crewmates away from a dead body or concealing a kill.Originally, if An Impostor had Submit Scan in their fake tasks list, a scan could be submitted. However, this was most likely changed for being too overpowered and misleading. Isle of Man, Isle of Wight, Northern Ireland and the Scottish Highlands) may take longer to reach you.