The paper proves that Farfetched Fables (1950) by George Bernard Shaw is a prototype of science fiction theatre within Darko Suvin's theory framework. Since science fiction theatre is a rare genre and a challenging one as well. As such, it has its own peculiarities that are unfolded in this paper. They are tackled basically in the context of Darko Suvin's science fiction theory. Though, known generally for his comic social plays, George Bernard Shaw can be considered a pioneering figure in the realm of science fiction theatre. Such a fact is illustrated in handling his final play Farfetched Fables. Cognitive estrangement and the novum are among the substantial terms of Suvin's theory, that are simultaneously presented in the play. Herein, Farfetched Fables usually presents atypical alternative worlds, which are explored and analysed. The paper proves implicitly that Shaw is prophetic in delineating science fiction in particular firstly, and in adapting it to the theatre as well. It ends with possibilities of further topics of science fiction theatre.