🛡️ Iron Line
Build turrets, hold the line. Defend your base from waves of troops across escalating levels.
Level1
Wave0/0
Cash0
Base20
Score0
Tap a turret below, then tap a build pad to place it. Tap a placed turret to upgrade or sell. Start the wave when you're ready.
How to play Iron Line
Enemy troops march along the road toward your base. Stop them by building turrets on the build pads beside the road.
Build: tap a turret in the menu, then tap a glowing build pad. Each turret costs cash.
Earn: you get cash for every enemy destroyed, plus a bonus for clearing a wave. Spend it on more turrets or upgrades.
Upgrade / sell: tap a placed turret to upgrade its power/range or sell it for a partial refund.
Base health: every enemy that reaches your base costs you base HP. Lose all of it and it's game over.
Levels: clear all waves of a level to advance to a tougher map.
Turrets:
- 🔫 MG Nest — fast, cheap, single-target. Your workhorse.
- 💥 Cannon — slow, heavy splash damage to clustered troops.
- 🚀 Missile — long range, homing, big single-target damage.
- ❄️ EMP — slows every enemy in range so other turrets land more hits.
Contest scoring:
- Each run scores points from how far you get, your score, and your speed — better runs rank higher.
- Your best run per game each day counts, and playing more different games multiplies your monthly points (up to 2×).
- Clear level 20 → +50 bonus contest points, one-time.