Pixel Starships Wiki

We've Moved! Just as Gamepedia has joined forces with Fandom, this wiki had joined forces with our Fandom equivalent. The wiki has been archived and we ask that readers and editors move to the now combined wiki on Fandom. Click to go to the new wiki.


Pixel Starships Wiki
Small Reactor   Fusion Reactor   Coal Reactor

Limited power source for basic ship.

Level 1 Level 2 Level 3 Level 4 Level 5 Level 6

Ship Level 1 2 3 4 5 6 7 8 9 10 11
Number Available 1 1 2 2 3 3 3 3 3 3 3
Icon Name Size Stat Enhancement
ReactorIcon.png REA 3x2 None
Level PowerPowerIcon.png Generated Upgrade Ship Level Required
1 0-2 50 2m 1
2 0-3 250 5m 1
3 0-4 650 10m 2
4 0-5 1.25K 1h 3
5 0-6 2.5K 2h 3
6 0-7 20K 16h 4


The Small Reactor is a 3x2 Reactor automatically built and unlocked at level one. The Small Reactor is the largest, earliest, and cheapest way of generating power for the player's ship. Due to the importance of power, many players will tend to target the Small Reactor, especially in the early game.


Battle Mechanics

The Small Reactor will continue to provide power to the player's ship even when it's upgrading, EMP'd, or System Hacked. The amount of power the Small Reactor generates can also vary if it's damaged. Put simply, the power bars are treated as health bars, with one health bar representing one power.

Reactors in general also have some hidden mechanics. For example, the game forces the player to have one Reactor on their ship at all times. Along with this, if no reactor has full power, the game will give the player a 0% Escape Rate, even if the player has a Bridge.

In Combat

Small Reactors can be a massive target for enemy boarders. Instead of wasting Crew potential by placing them in the Small Reactor, many players recommend placing Landmines in the Small Reactor. Separating them with Security Gates will also work. In general, Small reactors should be accessible by Crew and should have at least 2 blocks of Armor around them.

When To Use

The Small Reactor should be used whenever it can. It's cheap, it provides a lot of power, and power is incredibly important. There really is no reason not to use the Small Reactor.


The Small Reactor cannot be programmed with AI. The Small Reactor is categorized as a "Reactor" in AI coding.

Crew Interactions

The Small Reactor cannot be buffed by Crew.

Powered Rooms

Weapon Rooms

Laser Rooms: Mineral Mining LaserKias PhaserK BlasterPhoton PhaserPlasma DischargerParticle DischargerLaser BlasterPhoton DisruptorEMP CannonIon Cannon

Ballistic Rooms: BolterMinigunRailgun

Missile/DOA Rooms: Missile LauncherMulti Missile LauncherHangarTeleportSmall Weapons PlatformMedium Weapons Platform

Defensive Rooms

Defends Via Damage: Anti Craft LaserSecurity GateGas TrapZaki Tentacle GardenDisintegrator Gate

Defends Via Support: Shield GeneratorShield BatteryMed BayToiletAndroid StudioVisiri MechbayRadar

Defends Via Dodge: EngineFusion Drive EngineCloak Generator


Small ReactorFusion ReactorCoal Reactor