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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.
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Match strength key:80+65+50+<50Floodline Legion
SteamAbout Floodline Legion
Build a deck. Summon an army. Win the battle.
Your deck IS your army. Play it in real time.
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.
Forge a build, not just a deck
Within the Human faction, three types pull your deck in different directions — and the best runs weave them together:
And of course, these builds don't work in isolation — they're organically wired together by all kinds of systems!
Unusual cards, keywords, and the engraving system.
Units aren't the only things fighting. Some cards and engravings rewrite the rules of battle themselves.
Steam data © 2026 Valve Corporation. Trademarks are property of their respective owners.
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