I got this from Kani Club.
Three players and an audience (optional).
The scene is an alien visitor being interviewed by someone who does not speak her/his/its? language. So there is an interpreter.
Choose the setting: a TV program, an immigration interview, a job interview, a political meeting, the UN...
Role play an interview with the alien speaking gibberish which the interpreter translates into English. When the interviewer speaks, the interpreter translates into gibberish.
Variation:
Summit meeting: in this case, there are two alien representatives meeting and negotiating some kind of deal. Each one has an interpreter. The interpreters both speak English, so when Alien A speaks, interpreter A translates into English, then interpreter B translates into gibberish for Alien B and vice versa.