Guide: MIRV (Multiple Independently-targetable Reentry Vehicle) in OpenFront.io

Overview

The MIRV is the most powerful nuclear weapon available in OpenFront.io. Upon deployment, it saturates an entire nation with dozens of sub-warheads, devastating territory and troop counts.

Key Facts

• Cost: 25,000,000 Gold
• Requires at least one Missile Silo
• Cannot be intercepted by SAM Launchers

Prerequisites

1. Missile Silo (Military Building, MB)

   • Unlocks all nuclear weapons (Atom Bomb, Hydrogen Bomb, MIRV)
   • Cost: 1,000,000 Gold
   • Cooldown: None for MIRV launches

2. Sufficient Gold Reserves (≥ 25 million)

3. Control of non-water territory for silo placement

Building & Launch Procedure

1. Construct a Missile Silo

   • Right-click on the map’s land pixel → Build Menu → Missile Silo.
   • Ensure silos are positioned near your borders for minimal flight path delays.

2. Acquire Gold

   • Expand territory to increase trade-ship revenue.
   • Build ports, trade routes, and cities to boost income.

3. Select MIRV

   • Right-click any non-water tile → Radial Menu → Build Menu → MIRV.
   • The nearest Missile Silo auto-launches the MIRV.

4. Targeting

   • Choose the opponent nation’s land tile.
   • MIRV travels northward, then disperses miniature warheads across the entire nation.

Missile Behavior & Effects

• Flight Path: Upward toward the map’s north edge, then lateral dispersal.
• Interception: SAM Launchers cannot destroy MIRVs.
• Explosion: Hundreds of sub-warheads strike randomly, irradiating all impacted land and destroying most defending troops.

Strategic Usage

Offensive

• Snowball Prevention
  Use MIRV to reset a runaway opponent’s snowballing territory and troop advantage.
• Alliance Disruption
  Target key allied nations to fracture coalitions.
• Psychological Impact
  The threat of MIRV forces opponents to divert resources to missile silos and defense, opening opportunities elsewhere.

Defensive Counterplay

• Pre-emptive Strikes
  Monitor opponent silo counts; if they approach > 1 silo, consider early aggression.
• Border Fortification
  Build Defense Posts around vulnerable borders to slow re-expansion post-MIRV.
• Economic Diversification
  Maintain multiple income streams (ports, factories) to rebuild quickly after devastation.

Tips & Best Practices

• Silo Clustering
  Placing multiple silos close together ensures simultaneous launch if one is destroyed mid-flight.
• False Targets
  Deploy a visible silo as bait; hide MIRV silos elsewhere to catch enemies off-guard.
• Resource Timing
  Save up slowly; avoid spending on lower-tier nukes once a MIRV is within reach.
• Map Awareness
  On large maps, position silos centrally in your territory to minimize enemy shelling and launch delay.

Conclusion

Mastering the MIRV transforms territorial warfare in OpenFront.io. Its unparalleled destructive capability, combined with strategic timing and silo placement, can single-handedly swing the tides of any match. Use it wisely—both as a deterrent and a decisive weapon.