One of Yu-Gi-Oh's "side games" I thought was interesting is Dungeon Dice Monsters; fun in the manga/anime, has a solid Game Boy Advance title, & the IRL version has seen a renaissance
Yu-Gi-Oh! Dungeon Dice Monsters, a Twenty Year Reunion
Dungeon Dice Monsters: Dice and Cards - Yugipedia - Yu-Gi-Oh! wiki
Dungeon Dice Monsters' Rogues Gallery of Yu-Gi-Oh! Manga Villains | Oddity Game Seekers
Dungeon Dice Monsters: 20 Years Later : r/yugioh
Yu-Gi-Oh Dungeon Dice Monster Game : Amazon.in: Toys & Games
Watch Yu-Gi-Oh! Episode : Dungeon Dice Monsters, Part 1
Yu-Gi-Oh! Dungeon Dice Monsters - Wikipedia
Game Boy Advance - Yu-Gi-Oh!: Dungeon Dice Monsters - Dungeon Dice Cards - The Spriters Resource
Yu-Gi-Oh! Dungeon Dice Monsters | Board Game | BoardGameGeek
Yu-Gi-Oh History: What Was Dungeon Dice Monsters? | TCGplayer Infinite
Yu-Gi-Oh History: What Was Dungeon Dice Monsters? | TCGplayer Infinite
Mattel 43575 Yu-Gi-Oh Dungeon Dice Monster Game Set for sale online | eBay
Dungeon Dice Monsters Reborn — Vindicated - Games That Crit Different