YMMV / Yu-Gi-Oh! (Carddas Version)

• Obvious Beta: The game has enormous holes in it to say the least.
  • Ambiguous rules:
    • The duel ends when both players deck-out: Anyone possessing Exodia and 35 other monsters can guarantee a win, as they would only have to tribute one monster per turn until they draw Exodia.
    • No monsters in hand: It doesn't say that you lose when you can't summon monsters. Therefore, it is possible to have a single monster card (and a deck full of Spells, Traps or Equips). Quite useful with cards like "Spell-binding circle," which reduce enemy ATK to 0 (making it an easy to kill target). While having a level 1 monster, this makes a 1-hit strategy.
    • No rules regarding how many copies of a single card you can have in your deck. The Yami Yugi card beats everything, so a deck of 40 such cards will automatically win unless the opponent has the 5 Exodia cards.
  • Ambiguous cards: There are PLENTY of ambiguous cards that could be read in many ways.
    • Cyber-shield requires one female-like creature to be equipped. Celtic Guardian is quite female-like. What gender are Blue Eyes White Dragons?
    • Elegant Egoist doesn't say WHICH monster should be replicated, or how "replication" works.