How to Play Iron Swarm

Iron Swarm is a 2D top-down tank arena. You drive a single tank, and your barrel always points in the direction you are moving — so steering and aiming are the same input. This page covers the full controls on every platform, the round and boss cycle, your special weapons, the three game modes, and the beginner mistakes worth skipping. New to the game? You can play it free in your browser while you read.

Controls — web and desktop

• Move: W A S D or the arrow keys.
• Aim: automatic — the barrel follows your movement direction.
• Fire: Space or F. Hold to keep up continuous auto-fire bursts.
• Missile: R launches a high-damage missile on a cooldown.
• Drone: E activates your support drone.

Controls — mobile

On phones and tablets, a left-thumb on-screen joystick handles movement (and therefore aim), and right-side buttons handle fire, missile, and drone. The actions are identical to desktop — only the input surface changes.

The round and boss cycle

Combat runs in a four-round cycle. Clear the enemies in rounds one through three, then face an escalating boss tank every fourth round. Difficulty keeps scaling after each cycle, so later bosses hit harder and move faster. There are four boss designs you will meet as you progress:

• Standard boss — the all-rounder that teaches the multi-phase rhythm: patterns intensify as its health drops.
• Glacier Warden — mobile early, then turns stationary and starts dropping mines in its final phase. Keep moving and watch the ground.
• Bastion — a stationary fortress with triple shots, turret spawning, and a heavy overcharge shot. Clear its turrets and strike between volleys.
• Iron Commander — a drifting heavy that fires burst cannons and punishes you with counter-shots; its final phase adds a spread attack and speeds up. Bait its counter-shot, then reposition.

Every boss runs distinct phases, so the right move is to learn each phase's telegraph, dodge the wind-up, and answer in the gap that follows.

Using your missile and drone

The missile (R) and drone (E) both sit on cooldowns, so treat them as commitments rather than spam. Save the missile for boss phases and clustered enemies where the burst damage pays off, and activate the drone when you need extra pressure while you fall back to cover.

Campaign, Survival, and Daily Challenge

• Campaign — handcrafted missions across chapters, each with a star rating. Replay for a cleaner, faster clear to raise your stars.
• Survival — endless escalation; play for distance and your personal best, not a finish line.
• Daily Challenge — one rotating objective per day for a quick, fresh test.

Beginner mistakes to avoid

• Standing still. Because aim follows movement, a stationary tank is both an easy target and slow to re-aim. Keep rolling.
• Holding fire into walls. Auto-fire is free, but position for a clear lane first — line up the shot, then hold.
• Burning the missile early. Don't waste it on the first weak enemy; you will want it when a boss changes phase.
• Ignoring telegraphs. Bosses tell you what is coming. Read the wind-up, dodge, then punish.
• Skipping pickups. Grab supply drops during lulls so you are topped up before the next wave.

Ready to roll out? Start a battle, or head back to learn more about Iron Swarm.