On FTL, some weapons have a breach chance. What does breach do? How important is it?
Screenshot below:
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Sign up to join this communityOn FTL, some weapons have a breach chance. What does breach do? How important is it?
Screenshot below:
In FTL a Breach is a hole in the hull represented by a crack in the floor - you can see a hull breach in the room below the Engine room in the below screenshot
Breaches slowly vent oxygen into space and also must be repaired before the system contained in that room can be repaired and so they can be particularly nasty when trying to repair vital systems in a room.
The breach chance of a weapon is the chance that the wepon will cause a hull breach in that room when it hits (I'm not sure what probability "low" corresponds to)
Breaching creates a breach in the hull. Breaches will slowly remove oxygen from any room exposed to the breach (without an airlock between it and the breach).
Other answers have covered the effect of breaches, slowly losing oxygen from a room. The wiki currently lists the stats of all weapons, including the percentage for breach chance*
Quick summary:
"Breach Chance: Low" corresponds to a 10% to 30% chance
"Breach Chance: High" corresponds to a 80% to 100% chance
Interestingly, the Breach Missile, is the only weapon with "Breach Chance: High" that does not have a 100% chance of causing breaches.
List of weapons with non-zero Breach Chance
10% Breach Chance
20% Breach Chance
30% Breach Chance
80% Breach Chance
100% Breach Chance
*Note: I double checked the game files, FTL Faster Than Light\resources\data.dat
, to verify the wiki breach chance values. Under weaponBlueprint
the breachChance
field is always an integer between 0 and 10, and the values seem to match the wiki (e.g. Breach Missiles have a value of 8)