A roguelite deckbuilder where your cards are a living army. Summon units onto a single lane in real time, manage your mana, and let a clean deterministic battle play out. Forge a Swarm, a blessed elite, or a spreading plague — then climb.

Build a deck. Summon an army. Win the battle.<h2 class="bb_tag" >Your deck IS your army. Play it in real time.</h2>Floodline Legion fuses two genres that rarely meet — the deckbuilding roguelite and the real-time autobattler. Every card in your hand is a soldier waiting to be summoned. Drop a unit onto the single front line and it advances, clashes, and falls on its own. But when you summon, what you bank your mana for, and how you build and roll your deck into a snowball is entirely up to you.Mana fills up without pause and cards trickle into your hand a few at a time, so every moment is a small choice — spend now to hold the line, or save for the card that ends the fight? Build something better.<h2 class="bb_tag" >Forge a build, not just a deck</h2>Within the Human faction, three types pull your deck in different directions — and the best runs weave them together:<ul class="bb_ul"><li>The Swarm — cheap conscripts that summon several at a time, plus banners and war-horns that strengthen every ally in proportion to your accumulated Host. Pack the lane wall-to-wall with bodies.</li><li>The Blessing — slow to start, terrifying to finish. Stack permanent buffs across your whole army and field elites that synergize with those stats. A single buffed unit can clear the screen by itself.</li><li>The Contagion — death is contagious. Venom ignores defense and grinds enemies down with damage over time, and when its host dies it spreads to those nearby. Hold out, and the enemy clears itself.</li></ul>And of course, these builds don't work in isolation — they're organically wired together by all kinds of systems!<h2 class="bb_tag" >Unusual cards, keywords, and the engraving system.</h2>Units aren't the only things fighting. Some cards and engravings rewrite the rules of battle themselves.<ul class="bb_ul"><li>Keywords — over twenty keywords and status effects each add their own unique rule. For example, Rear and Front make &quot;where you place a unit&quot; matter even on a one-dimensional front line. Beyond that, Charge grows stronger the longer you hold it in hand, and Venom leaps to the side when its host dies — every single keyword opens up a new play.</li><li>Engravings — a permanent upgrade you etch onto a single card. Even more special is the variant engraving. A variant engraving swaps a unit wholesale into a different build. An ordinary Mage can turn into a Blessing Mage, a Venom Mage, or a Host Mage. Build something better out of all kinds of variants.</li><li>Unusual cards — build a deck and summon an army from over 60 cards. But units aren't the only things fighting — some cards and engravings rewrite the rules of battle themselves. The Rewind card sends only the enemy back to the start of the previous round, while your army stays right where it is. Buy time to build a powerful formation. A single card can flip the whole board.</li></ul>

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Floodline Legion Achievements