'Game of Thrones' Star Emilia Clarke -- It's Gonna Get REALLY Bloody

The blood-soaked gorefest known as "Game of Thrones" is about to get even more gruesome ... one of the stars of the HBO fantasy series tells us the next season is going be dripping in plasma.

Emilia Clarke -- who was nominated for an Emmy for playing exiled princess Daenerys Targaryen -- gave a sadistic little laugh when we saw her at LAX and asked how much blood would be shed in season 4 ... and then she clued us in.

The deaths on the show have been epic so far -- lots of beheadings, a knife through the eye, being gored by a boar, one guy had boiling, molten gold poured on him ... another was tied to a horse and was dragged by his weiner.

Check out the clip ... and see a pap nearly break his neck.