In one embodiment, a method includes receiving, in a group conversation in a message thread on a messaging application, a request to access a game from inside the message thread from one or more users of a group of users associated with the message thread; generating an anonymized context identifier (ID) for the message thread; providing the context ID to a game bot associated with the game, the game bot being a software agent configured to act automatically on behalf of the game, the context ID being used by the game bot to interact with the group of users associated with the message thread; and sending, by the game bot using the context ID, instructions for presenting a game window within the message thread on one or more instances of messaging applications running on one or more client systems associated with the one or more users of the group.