Earlier this week, we revealed new deleted scenes from Game of Thrones: The Complete Fourth Season Blu-ray and DVD, which was released earlier this week. While fans continue the long wait for Season 5, we have a new gag reel from the hit HBO series, which features stars such as Peter Dinklage, Lena Headey, Emilia Clarke, Nikolaj Coster-Waldau and many more screwing up their lines and even losing their balance.

In Season 4, while the Lannisters' hold on the Iron Throne remains intact, new and ongoing threats from the south, north and east threaten to tip the scales. As Stannis Baratheon and Daenerys Targaryen continue to grow their respective armies, the arrival of the Lannister-loathing "Red Viper of Dorne" poses a more immediate danger. In the north, the depleted Night's Watch seems overmatched against the advances of Mance Rayder's army of wildlings, which in turn is being trailed by an even more formidable foe: the undead White Walkers.

Based on George R.R. Martin's best-selling book series A Song of Ice and Fire, the fourth season of Game of Thrones features a wealth of new cast members that join award-winning regulars including Peter Dinklage, Lena Headey and Charles Dance. New characters include: Oberyn Martell (Pedro Pascal), Ellaria Sand (Indira Varma), Lord Mace Tyrell (Roger Ashton-Griffiths), and Ser Gregor Clegane, a.k.a. "The Mountain" (Hafþór Júlíus Björnsson). Take a look at these humorous bloopers, which shows how the cast members keep a fun mood on the set. Stay tuned for more on Season 5 of Game of Thrones, debuting Sunday, April 12 on HBO.