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Cell Defense is an incremental tower defense set inside the body. One antibody holds the center as endless waves of viruses and bacteria close in. Survive, earn, and spend it on weapons, build-defining cards, and upgrades that keep paying out while you idle.
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Cell Defense is an incremental tower defense set inside the body. You command a single antibody at the center of the cell while viruses, bacteria, and mutating swarms pour in from every side. Survive, bank what you earn, and pour it into weapons, cards, and upgrades that shape your build and push the next run further than the last.
Plan a build, start a run, and collect the rewards when your cell finally falls. Early runs keep your hands on the controls: you're buying upgrades mid-fight and reacting to the swarm. Later, idle income and higher game speeds let runs play out on their own and keep paying while you're away.
Five unlockable weapons beyond your base antibody, each one different: Complement Cascade chains between clustered enemies, Macrophage Vortex orbits and sweeps, Lytic Granule locks on and detonates, Plasmocyte Mitosis boosts your income, and Granuloma drops a wall enemies have to break through.
An end-of-run card draft that reads how you actually played and offers cards to match. Deepen your build or pivot into a new one. Stack synergies, merge duplicates, chase rarities, and buy the exact card you want.
A meta-game that carries between runs: a Workshop of permanent upgrades and a Lab tech tree that keeps researching even while the game is closed.
Weapons, cards, and upgrades snap together into builds that are yours and a fresh draft after every run means there's always a new one to chase.
The waves never stop. A boss arrives every ten of them, difficulty tiers raise both the danger and the payout, and game speed scales up to 5×. There's always one more wall to break.
At a glance
Single-tower incremental tower defense, set inside the human body
Five unlockable weapons plus your base antibody weapon, each one different
End-of-run card drafting and synergy builds: duplicate merging, rarity chase, and a card shop
Permanent Workshop upgrades + an offline-progressing Lab tech tree
Endless waves, difficulty tiers, and a boss every 10 waves
Idle income and up to 5× game speed
Wishlist Cell Defense to be notified the moment it launches.
Steam lists the Cell Defense release date as Q4 2026.
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