Sublight Railgun & Kinetic Build: Piercing Lines Without Wasting Shots
Build railguns in Sublight around alignment, kinetic damage, range, crit, and turn speed while accounting for reduced damage on later pierces.
Railguns are strongest when you can align multiple targets without giving up first-hit damage. Build for kinetic damage, range, crit, and hull handling. Official 0.16.6 notes reduced damage on later pierces, so the correct goal is not “hit everything with full damage”; it is “make the first hit count while turning each shot into efficient lane pressure.”
The pierce rule that matters
Railguns were adjusted so later pierced targets take reduced damage. They still punch through hordes, but you should not evaluate a railgun as if every enemy in a line receives the same boss-level hit.
Ship handling matters
Firing arcs decide whether a railgun has a clear target. A railgun on a narrow forward mount can be excellent if the ship turns fast enough to line up targets. On a sluggish hull, the same weapon may spend too much time searching for a lane.
Sabre progression
Patch 0.17.5 added Tier 2 and Tier 3 progression to the Sabre railgun, the first built-in weapon to receive that style of mid-run upgrade. That makes railgun-specific progression worth watching closely in Early Access updates.
Default priorities
| Pick | Why |
|---|---|
| Kinetic damage | Core damage family support |
| Attack range | Creates longer alignment windows |
| Crit | Rewards high-value first hits |
| Turn speed | Lets the hull create the line instead of waiting for one |
Make the starting loadout protect the firing line
In 0.20.02, select three starting equipment slots with the railgun’s alignment problem in mind. A hull that cannot create a clean line may benefit more from movement support than from another damage choice.
The new cruise-control binding rests the forward input; you still need to steer the hull to line up the first high-value target. If boss-camera movement disrupts that alignment, disable it through the new Options and keep the railgun’s target priority appropriate for the encounter.
Patch details: official 0.20.02 notes (October 31, 2026, UTC).