Setup
Bring a 50-card Main Deck and a 5-card Digi-Egg Deck. Only In-Training and Egg-tier cards go in the Digi-Egg Deck.
Place the top 5 cards of your Main Deck face-down as your Security Stack.
Both players draw 5 cards and may mulligan once.
Memory starts at 0 on the shared gauge. First player begins by taking 3 Memory (varies by ruleset).
How to play
- 1
Memory is shared between players on a single gauge from –10 (opponent) to +10 (you).
- 2
Play or digivolve Digimon by paying Memory costs. Costs push the Memory gauge toward your opponent.
- 3
Your turn ends automatically the moment Memory becomes 0 or negative for you (i.e., your opponent's turn).
- 4
Attack with an active Digimon: your opponent may block with a Digimon with Blocker, or flip the top Security card.
- 5
Security cards fight back — a Security Digimon's DP is compared to the attacker's. Effects trigger on the way to the trash.
- 6
Once Security is empty, one more successful direct attack wins the game.
Rules to know
Memory gauge
A single shared counter between –10 and +10. Playing costs push it toward your opponent — the more Memory you spend, the more they get on their turn.
Digivolving
Stack a higher-stage Digimon on top of a lower one to inherit some effects, refresh the Digimon, and reduce its total cost. This is the game's core engine.
Security battles
When you attack, flip the top Security card. Security Digimon compare DP with the attacker; Security Options and Tamers trigger from Security.
Tamers
Tamers sit alongside your Digimon and passively give you extra Memory each turn. Great for accelerating your resource curve.
Suspend & Delay
Suspended (tapped) Digimon can't attack until the next Unsuspend Phase. Delay effects sit in play, wait a turn, then trigger.
Win conditions
Land one direct attack after your opponent's Security Stack is empty.
Your opponent cannot draw a card at the start of their Draw Phase.
Play smarter, faster
Don't hand your opponent 5+ Memory unless you have blockers or Security triggers to punish it.
Digivolve cost > raw play cost. Digivolving is almost always more efficient than playing a Digimon from hand.
Play around known Security triggers in staple decks — checking Security into a blowout can lose you the game on the spot.
Tamers pay for themselves in 2–3 turns. Playing them early is usually correct.