Alternate Play Styles
Easy Pray
You and your opponent automatically wager your rarest cards. In addition, the match becomes single elimination; one won duel decides the match.
Kaiba Corporation's "Battle City" Tournament
Starting Life Point value is set at 4000. In addition, both players must wager cards of equal rarity (out-of-print and short print are boosted one level up, Super Short Print is boosted either one or two (both duelists must agree)).
Ultima's Plan B
No wagering is allowed and you start at 6000 life points. In addition, you may not select the rule "Seniority".
Rare Hunter
You and your opponent may select one Semi-limited or Limited card and remove/lower its limitation. In addition, you automatically wager your rarest two cards.
High Health
Starting Life Points is 10,000.
Trinity
A three-way duel where you can only attack the person to your right and defend for the person on your left. No wagering.
Double Duel
A duel with two two-player teams. All card effects designating an opponent affect both opponents (as in all multiplayer duels). Your life points are separate, and the first team to have both players hit zero looses. You may activate Spell Speed One on your partner's turn. If you play a Penalty Game, you select one player to do it for your team.
Tertiary: No "I" in Team
Each team, embracing the essence of teamwork, has a shared Life Point value.
Tertiary: Shared Vision
You may look at your partner's face-down cards on the field.
Tertiary: Partner's Best
You may defend for your partner's Life Points, activate their magics and traps, and attack with their monsters.
Tertiary: Two as One
You and your partner take your turn simultaneously. You must enter each phase together.
Tertary: Tag Team
The two players have seprate decks and hands and Graveyards, but share one field. At any time, only one of the team may be "in play", or dueling. The other is "in Stand-By", watching. At any time, these two can reverse roles, bringing a fresh deck and duelist in in place of the worn deck and duelist.