Yu-Gi-Oh! Capsule Monsters

Yugi, Joey, Tea, Tristan, and Mr. Muto are sucked into the Capsule Monsters RPG game. Now they have to figure out the game in order to leave; thankfully they have a map. When coming in contact with a monster capsule, the monster becomes bonded with you. You have to use your monsters to help you through the game's challenges - but attack points aren't everything. You have to think strategically and solve the riddles of the game.

This series doesn't originate from Japan like the other Yu-Gi-Oh! series, but rather is an American-produced spin-off of Yu-Gi-Oh!.

Related series:
Yu-Gi-Oh! (Japanese series based on Yu-Gi-Oh manga volumes one through seven)
Yu-Gi-Oh Duel Monsters (Japanese series based on Yu-Gi-Oh manga volume eight on)/Yu-Gi-Oh! (English version)
Yu-Gi-Oh Duel Monsters GX! (Japanese spin-off from Yu-Gi-Oh Duel Monsters)/Yu-Gi-Oh! GX (English version)