Betrayal.io

Betrayal.io is a multiplayer social deduction game that is similar to Among Us. Players take on the role of either a crewmate or a secret saboteur, known as a "betrayer." The objective of the betrayer is to sabotage operations while the goal of the crewmates is to complete their tasks without being killed.
It was made by the same company that make Fishington.io and that company partnered with Discord to have their games available under the Discord Games Lab for some time, but they were eventually removed, due to them shutting down.