
The SAM (Surface-to-Air Missile system) is a Building that has the ability to shoot down nearby nukes in a 75 pixel radius around the building. It can intercept Atom Bombs and Hydrogen Bombs. As of Update 33.0, it also intercepts MIRV warheads, which now fly as standard nukes.
It can be upgraded as of update 24.0, increasing it's range.
Launching an Intercepting Missile

The SAM will only intercept a missile headed for your territory. When intercepting, the SAM prioritizes Hydrogen Bombs over Atom Bombs. It will prioritize missiles that are closer to it too, but will always prioritize Hydrogen Bombs over Atom Bombs. The SAM has a 7.5 second cooldown[1], in which while it is reloading the icon of the SAM will turn red indicating that it can not intercept a missile at that time.[2]
Price
The player's first SAM launcher costs 1.5M gold, all subsequent launchers cost 3M gold.
Intercepting Missile
Once a SAM detects an Atom Bomb or Hydrogen Bomb in it's range, it will launch a intercepting missile to try to stop it. The intercepting missile will move towards the target missile until it has reached it. As of update 28.0 the SAM missile no longer has a 75% chance to successfully intercept a target missile[3]. Previous to the update it had a 75% chance[4] to successfully intercept the target missile.
See also
Sources
- ↑ https://github.com/openfrontio/OpenFrontIO/blob/e4686642a0f341b5b3eb17c03f64d22f8a7b9a8a/src/core/execution/SAMLauncherExecution.ts#L25
- ↑ https://github.com/openfrontio/OpenFrontIO/commit/24f25d677a6f43089fb7aa50c1509a84bf8839a1
- ↑ Remove RNG from SAM launchers by Lavodan · Pull Request #2665 · openfrontio/OpenFrontIO
- ↑ https://github.com/openfrontio/OpenFrontIO/blob/e4686642a0f341b5b3eb17c03f64d22f8a7b9a8a/src/core/execution/SAMMissileExecution.ts#L27