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Hold the mouse button or your finger on the field to fire at the robots. Drag the fire, ice or lightning button onto the field and release to cast it; release on a button to cancel. Abilities use energy, which refills over time, and the + button refills it for crystals. Win a stage by destroying every wave before the wall falls. Spend gold and crystals in UPGRADES between stages. Clear stage 100 to unlock Endless.
Iron Defense is a one-screen defense shooter set in an industrial scrapyard. Hold a turret on a scrap wall while waves of junk robots march in from the right. Hold to fire, and drag fire, ice and lightning abilities onto the field. Between stages, spend salvaged gold and crystals on your turret, the wall, an electrified floor and auto-gun pylons. Fight through a 100-stage campaign with bosses, then climb the endless stages to see how far a fully upgraded defense can hold.
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Iron Defense is a one-screen defense shooter set in an industrial scrapyard. Hold a turret on a scrap wall while waves of junk robots march in from the right. Hold to fire, and drag fire, ice and lightning abilities onto the field. Between stages, spend salvaged gold and crystals on your turret, the wall, an electrified floor and auto-gun pylons. Fight through a 100-stage campaign with bosses, then climb the endless stages to see how far a fully upgraded defense can hold.
Hold the mouse button or your finger on the field to fire at the robots. Drag the fire, ice or lightning button onto the field and release to cast it; release on a button to cancel. Abilities use energy, which refills over time, and the + button refills it for crystals. Win a stage by destroying every wave before the wall falls. Spend gold and crystals in UPGRADES between stages. Clear stage 100 to unlock Endless.
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