Hunter X Hunter 2011 Episode 5 Here

A group of applicants surrounds Hisoka, attempting to disqualify him because he is too dangerous. Hisoka decides to play "examiner" himself, slaughtering nearly all of them with his razor-sharp playing cards. Gon and Leorio vs. Hisoka:

As the applicants exit the underground tunnel, they enter a foggy, swampy area filled with deceptive creatures. Hunter X Hunter 2011 Episode 5

In the manga, the does not actually swallow Gon and Killua. A group of applicants surrounds Hisoka, attempting to

Leorio and Kurapika witness Hisoka's violence. While they initially run, returns to fight, unable to ignore the cruelty. Hisoka: As the applicants exit the underground tunnel,

Hisoka is impressed by Gon's potential and Leorio's courage. After knocking Leorio unconscious, he tells Gon they both "pass" his test. He carries Leorio to the next exam site himself after receiving a radio call.

A man appears claiming to be the real examiner, accusing Satotz of being a "Man-Faced Ape." Hisoka resolves the dispute by throwing cards at both; Satotz catches them, proving he is the real examiner, while the imposter is killed.

The in the swamp do not explode in this anime version, unlike in other depictions. Production Note: "TV vs. Home Release"