Sublight Passive Upgrades Guide: What Stats Actually Solve
A practical Sublight passive-upgrade guide for attack speed, range, projectile speed, crit, resource magnet, regen, movement, and capped passives.
Choose passives by the problem they solve. Attack speed fixes low firing volume; range improves uptime and now strengthens chaingun pierce lanes; projectile speed helps slow shots connect; movement and turn speed protect positioning; regen buys recovery time. Patch 0.18 also caps multiple passives, so a stat can disappear from reward options once it reaches its numerical cap.
Offensive passives
| Passive | Best when |
|---|---|
| Attack speed | Your weapon has enough damage but too much downtime |
| Attack range | Your arcs lose targets during movement or you use range-scaling pierce |
| Projectile speed | Slow projectiles trail moving targets |
| Crit | Base throughput is already stable |
Utility passives
Resource Magnet is not direct DPS, but it reduces dangerous collection paths and can keep leveling tempo high. Movement and turn speed likewise convert into practical uptime by helping the hull stay in a productive position.
Capped upgrades
0.18 moved multiple passives to numerical caps; capped upgrades stop appearing as reward choices. If a familiar upgrade disappears, it may be finished rather than bugged.
Starting equipment, passives and Barrage Core
0.20.02 lets you choose three starting equipment slots. That is a loadout choice before the run, alongside the passive-upgrade decisions made during it. The developer’s proposed equipment upgrades found mid-run are a later feature; do not reserve a current build around receiving one.
Barrage Core was repaired in 0.20.01: its combat benefits had been applying incorrectly and making it weaker than intended. An older run with weak Barrage Core performance can therefore be a poor comparison. Read the equipped item’s benefits and judge whether they solve the current build’s problem.
For pirate-event chains, the developer specifically recommends movement equipment. Compare that escape utility with taking another passive damage increase.
Patch details: official 0.20.02 notes (October 31, 2026, UTC).
Patch details: official 0.20.01 fixes (October 20, 2026, UTC).