The Three Gakumas Card Types And Deckbuilding Rules That Never Fail
Gakumas skill cards come in three types. ACTIVE cards pay a cost to score points or apply a state — they are your scoring engine. MENTAL cards buff, heal, and build the foundation the Active cards detonate on. TROUBLE cards are junk shuffled into your deck: they do nothing for you and dilute your draws. Every card carries a cost, on-play effects, conditions, passive effects and a use limit, and most have an upgraded (+) version that is strictly better. The deckbuilding rules: every card must serve your plan's scoring engine, a leaner deck draws its core cards more often, and Trouble is a problem to manage rather than bad luck to endure.
Active: The Scoring Engine
Active cards are what actually produce points. You pay a cost and the card does its job: add score, or set up a state so a later card hits harder. The game's most basic appeal card, for instance, pays a cost of 4 and adds 9 score. Small, but it teaches you the right way to read every card that follows: what am I trading, and for how much? A deck stuffed with strong Active cards but nothing to fund their costs or build their states will stall on the exact turn you needed the payoff.
Mental: The Foundation Nobody Praises
Mental cards rarely look impressive because they do not score directly. They buff, they recover, they prepare later turns. On Sense, they are how you climb into good condition and stack concentration before you swing. On Logic, they are how you feed good impression and motivation so the snowball keeps rolling. Cutting Mental cards to cram in more Active ones is a classic beginner error: you end up with more swings, each one weaker than it should have been.
Trouble: A Problem, Not A Fate
Trouble cards are junk shuffled into your deck during the season. They do nothing for you, and the real damage is not the card itself — it is the SLOT it occupies in your draw. Every Trouble card is one more draw that failed to give you a core card. So treat Trouble as manageable debt: avoid in-run choices that generate more of it, and take the options that remove it when they appear. Do not shrug and call it bad luck.
Upgrade, Or Add A New Card?
This is the fork you will face constantly. Most cards have an upgraded (+) version that is meaningfully stronger. The thicker your deck grows, the lower your odds of drawing the card you actually want — so in most cases, upgrading a core card beats adding a mediocre new one. Only add a card when it fills a genuine hole: no way to fund costs, no way to recover stamina, no way to build the state your plan lives on.
Three Rules That Never Fail
One: every card must serve the scoring engine of the plan you are playing — a strong card on the wrong axis is still a dead card. Two: fight bloat, because every card you add dilutes the ones you actually want to draw. Three: treat Trouble as a problem to solve. These hold at every difficulty, on every plan, in every season. Look up the exact costs, conditions and effects of any card in the Gakumas skill card database before you decide to take it or pass.
Read the theory? Jump to the tool and run it with your own numbers.
Open the tool →