Season 21 Episodes
1. The 21st Season Begins! "Marchen Maze" (#237) (2)
April 21st, 20171 hr
2. Don't Make Fun! "Renegade" (#238)
May 5th, 20171 hr
3. In Celebration of the Movie! "Densha de Go! 64" (#239)
May 19th, 20171 hr
4. The Kacho Arrives! "Um Jammer Lammy" (#240)
June 2nd, 20171 hr
5. Jason the Kacho: "Splatterhouse 2" (#241) (1)
June 16th, 20171 hr
6. We'll Be Rescued, Right!? "Splatterhouse 2" (#242) (2)
July 7th, 20171 hr
7. GameCenter CX on The Pacific Ocean: Arino's First Challenge on a Boat! (#243)
July 21st, 20171 hr
8. Welcome to the Bad Streets! "The Adventures of Bayou Billy" (#244)
August 4th, 20171 hr
9. The Great Detective Arino!? "Nishimura Kyōtarō Misuterī: Blue Train Satsujin Jiken" (#245)
September 8th, 20171 hr
10. What Type is Arino Again? "Super R-Type" (#246)
October 6th, 20171 hr
11. A Space Worm?! "Earthworm Jim" (#247)
October 20th, 20171 hr
12. Eat That Meat! "Bonk's Revenge" (#248)
November 3rd, 20171 hr
13. Never Miss a Photo Op! "Gekisha Boy" (#249)
November 17th, 20171 hr
14. It All Started Here... "Dragon Quest" (#250) (1)
December 8th, 20171 hr
15. And Thus Into Legend... "Dragon Quest" (#251) (2)
December 22nd, 20171 hr
16. Arino's Three Kingdoms: "Dynasty Wars" (#252)
January 19th, 20181 hr
17. Move It! "Bazaru de Gozaru no Gemu Degozaru" (#253)
February 2nd, 20181 hr
18. Fight in 3D! "Virtua Fighter 2" (#254)
February 16th, 20181 hr
19. Shin Nippon Pro Wrestling: Great Warrior in Tokyo Dome (#255)
March 2nd, 20181 hr
20. Shoot! Destroy! "Wild Guns" (#256)
March 16th, 20181 hr
