This may be sacrilege to admit, but I’ll say it: Even Hamlet or Macbeth can get stale from time to time. For my fellow devoted Shakespearean fans who agree (off the record, of course) but don’t want to stray too far from the Bard, one Chicago improv troupe offers a refreshing solution: Forget the old standbys and just make one up yourself. The Improvised Shakespeare Company takes a random title, drawn from audience suggestions, and then spontaneously acts out an entire play to fit it. With no scripts, no rehearsal, and no idea of how it’ll all end, the thing could turn out to be a tragedy or a comedy—or, most likely, both at once. And cast aside thy fears, thou lovers of arts and wherefores: It’ll all go down in Elizabethan English. Dec. 5–6 at Artisphere. $22.