These days, digital effects are so, well, effective, that we can't tell what's real and what's not -- especially when it comes the gritty, bloody realism we witnessed in Season 4 of "Game of Thrones
." You see, it turns out that a lot of what we saw and assumed was done with practical effects (makeup, blood spatters, stunt people) actually wasn't. In the effects reel below, you can see exactly how it's done. Prepare to be amazed.
If you haven't seen "Game of Thrones" Season 4, turn away. MAJOR SPOILERS BELOW!