i had a reason to look up Doctor Faustus on Wikipedia and it had this to say i found it interesting.
The powerful effect of the early productions is indicated by the legends that quickly accrued around them. In Histriomastix, his 1632 polemic against the drama, William Prynne records the tale that actual devils once appeared on the stage during a performance of Faustus, "to the great amazement of both the actors and spectators". Some people were allegedly driven mad, "distracted with that fearful sight". John Aubrey recorded a related legend, that Edward Alleyn, lead actor of The Admiral's Men, devoted his later years to charitable endeavours, like the founding of Dulwich College, in direct response to this incident.[3]