They are not so much permitted as widely known. We ARE a spoiler board, there are pages and pages of spoilers here, most of our readers are very up on them. Both our prediction games' hosts work hard to ask questions that are non- specific for spoilers...but they may creep in. So don't say you weren't warned.
Not saying you will get spoiled, just that in other prediction games here sometimes people do comment on the questions.
And just a reminder that once something is in the media it is is no longer considered a spoiler. That goes for previews, promos, articles. So if you have been avoiding news about the cast and locations...that info is widely available.
Up to you!! redwings games are a blast, you will have fun. But if you 100% must not hear anything about the eps, then you may be safer in the FANTASY games.