Though not of an established property, the BREAK!! TRPG Kickstarter does isekai (and videogames) pretty interestingly.Don't forget the Konosuba TTRPG
Konosuba: God's Blessing on This Wonderful World! TRPG | Novel | Yen Press
The fantastical, wacky adventures from the famous Konosuba series come to life in this tabletop role-playing game. This book contains everything players andyenpress.com