Propane Explosive Bomb
The Propane Explosive Bomb is one of three ammunition types compatible with the Catapult and is the primary raiding ammunition type for the Catapult siege weapon. Facepunch added it to the game with the Primitive Update in February of 2025.
Known for its capacity to destroy bases from a distance, the Propane Explosive Bomb inflicts substantial splash damage if properly shot at seams where walls connect. Their most significant raiding utility is their capacity to open multiple base levels at a time. Base designs are often planned around mitigating their splash damage to increase the number of Explosives necessary to fully breach the base.
Unlike the Rocket, which is a more mobile raiding weapon but unfortunately disabled in the Primitive Game Mode, the Propane Explosive Bomb only requires a Workbench Level 2 to craft but is much more difficult to maneuver and aim. In the event that the in-use Catapult is destroyed, so too is the raider’s capacity to use this ammunition.
Both types of combustible Catapult ammunition, the Firebomb, and the Propane Explosive Bomb, are also deployable. Regardless of the building privilege situation, anyone may take either bomb type and deploy it in any area except those restricted by monument build blocks.
Once deployed, any damage will trigger a 3 – 10 second countdown window, like throwing a Satchel Charge. Unlike the Satchel Charge, these types of ordinance are definitely going to explode, and once triggered, players have the tiniest of windows of time (2 to 3 seconds) to pick them up. If this isn’t done immediately, they will detonate.
Once impacted, players will notice small flaming fissures arising out of either bomb type. They are deadly to anyone nearby within roughly 10 meters. They will then deal slightly less damage than they’d otherwise have dealt if launched from the catapult.
It is extremely important to note that if a large stockpile of either bomb type is deployed, you needn’t damage each one individually to set them off; a chain reaction will begin once the first detonates, priming the others to blow up immediately thereafter.
These explosion types are also accompanied by a new disorienting shockwave that impacts players within a blast radius of roughly 15 meters. At this time, they may be detonated remotely with an Igniter system but will only detonate if they are deployed, not simply thrown on the ground or placed in a stash. They may be picked by those with building privileges if they are deployed and not ignited.
Both bomb types are capable of being detonated underwater, but the after-flaming effect of the Firebomb will immediately disperse.
