More games of Gundam are decided by combat math than by raw card power. Whether an attack is brilliant or a blunder usually comes down to a few small numbers and one rule newer players miss: when two Units fight, they damage each other at the same time. Send a Unit into a bad fight and you don't just fail to kill — you can lose your own Unit for nothing.

The good news is that the math is simple once it's laid out. There are only two stats that matter in a fight, one core timing rule, and a short list of keywords that bend it. Learn those and you'll start winning trades you used to lose and stop walking into ones you can't win.

This guide breaks down exactly how damage and destruction work — AP versus HP, the simultaneous damage step, First Strike, blockers, and the chain of Base, Shields, and the finishing blow — all straight from the official rules.

The Two Numbers: AP & HP

Every Unit has two combat stats, and they're small, readable numbers — not the four-digit "power" figures from some other card games.

• AP (Attack Points): A Unit's offensive strength — how much damage it deals in battle.
• HP (Hit Points): A Unit's durability. When the damage on a card reaches or exceeds its HP, that card is destroyed.

That's the whole foundation. A "3/4" Unit deals 3 damage and is destroyed once it's taken 4. Bases and Shields have HP too (the free EX Base you start with is a 0 AP / 3 HP token), and they follow the same destruction rule. If the token setup is still new to you, our EX Base & EX Resource guide covers it; everything below is just how those numbers interact.

The Core Rule: Combat Is Simultaneous

Here's the rule that decides everything: when an attacking Unit fights a defending Unit, both deal damage equal to their AP to each other at the same time. There's no "attacker hits, then defender hits" — it happens together. So an attack isn't free; your Unit takes the defender's AP right back.

That gives every Unit-on-Unit fight one of four outcomes. Take your attacker with AP a and HP h, hitting a defender with AP A and HP H:

• Clean kill: Your AP ≥ their HP and their AP < your HP. You destroy them and survive. The dream.
• Mutual trade: Both AP values reach the other's HP. Both Units are destroyed. Fine if you're trading up in cost or value.
• Bounce-off: Neither AP reaches the other's HP. Both survive, both now carry damage. Often a waste of your attack — and you've left your Unit rested.
• Chump: Their AP ≥ your HP but your AP < their HP. You die, they live. The blunder to avoid.

Damage Sticks

Damage in the Gundam Card Game is tracked with counters, and crucially, it doesn't wipe clean at the end of the turn. A Unit that took 2 damage and survived stays at 2 damage into future turns until something heals it. The only way to remove damage is HP recovery — most often the Repair keyword, which removes a set amount of damage at the end of your turn.

This changes how you plan. A wounded enemy Unit is a standing target: a small attacker that couldn't kill it fresh might finish it now, and effect damage can soften a big body before you commit a Unit to the fight. Conversely, your own damaged Units are liabilities — a 5 HP Unit sitting on 3 damage dies to any 2 AP attacker. Track the counters on both sides; they're half the math.

First Strike Changes the Math

The big exception to simultaneous damage is the First Strike keyword. A Unit with First Strike deals its damage first. If that's enough to destroy the other Unit, the destroyed Unit never deals its damage back.

In other words, First Strike turns mutual trades and risky attacks into clean kills. A 3 HP attacker that would normally die trading into a 3 AP defender survives untouched if it has First Strike and enough AP to destroy that defender outright. It effectively lets a fragile Unit punch above its durability.

Blockers & Redirecting Attacks

On defense, the Blocker keyword lets you change who gets hit. During the block step of an attack, you may rest an active Unit with Blocker to redirect that attack onto itself. The attack then resolves as a normal simultaneous fight between the attacker and your blocker.

The math of blocking is about value and tempo. A blocker can:

• Save your Shields or a key Unit by taking a hit that was headed elsewhere.
• Trade up if your blocker can destroy a more valuable attacker in the clash.
• Chump-block a huge attacker with a cheap body to buy a turn — you lose the small Unit, but you protect something that matters more.

Remember that blocking rests the blocker, so it can't also attack that turn — and a Unit with the High-Maneuver keyword can't be blocked at all. Defensive, blocker-heavy decks lean on durable bodies precisely so their blocks win the simultaneous clash instead of just delaying it, and they often pair Blocker with Repair so the same wall heals up and blocks again next turn.

Attacking the Player: Base, Shields & the Kill

When you attack the player instead of a Unit, the damage flows through a strict order:

• 1. The Base, if there is one. A Base sits in the shield area and is hit before any Shields. Bases have real HP (the starting EX Base has 3), so they can soak multiple attacks before falling.
• 2. The top Shield. With no Base in the way, your attack hits the first Shield. Here's the key rule, straight from the official rulings: each Shield is treated as having just 1 HP, so any hit of 1 or more AP destroys exactly one Shield — and only one. A destroyed Shield is revealed; if it has a 【Burst】 keyword, its owner may activate that effect before it goes to the trash.
• 3. The player. Once a player has no cards left in their shield area, the next bit of battle damage they take from a Unit means they lose. (You can also win by decking your opponent out.)

Two cautions on the way in. First, watch for 【Burst】: breaking a Shield can hand the defender an effect that punishes your attack, so a careful opponent's Shields aren't purely free real estate — our shields and Burst guide digs into the timing. Second, that simultaneous-damage rule still applies when something fights back — but Bases and Shields with 0 AP don't deal damage to your attacker, so swinging into an undefended shield area is safe for your Unit (it just gets rested).

Putting the Math to Work

Tie it all together and a few habits separate good attackers from hopeful ones:

• Do the two comparisons before every attack. Does my AP reach their HP? Does their AP reach mine? Don't attack into a chump or a pointless bounce-off.
• Respect First Strike and 【Burst】. Both can flip a "good" attack into a loss. Block First Strike with bodies it can't one-shot, and weigh whether cracking that Shield is worth the trigger.
• Use damage as a setup. Since damage sticks, soften a big Unit with chip or effect damage, then finish it cheaply next turn — and protect your own wounded Units accordingly.
• Go wide to break Shields, big to win fights. Spread attackers to chew through the shield wall; save your high-AP Units for the trades where their size actually matters.

© GEEKYDOMAIN.COM | Strategy Powered by Data