1,940 ratings
ISBS: Doomsday Weapons & Ships
File Size
132.161 MB
Jul 8, 2016 @ 8:38am
Jun 8, 2018 @ 2:08am
54 Change Notes ( view )

Subscribe to download
ISBS: Doomsday Weapons & Ships

In 1 collection by Ankain
Improved Space Battles
5 items
Improved Space Battles - expand your mid / late game with 5 new super-capital class ships, over 50 new technologies and 11 doomsday weapons - including planet destroying, star system destroying and anti-fleet super-weapons.

Initial Compatibility Hotfix for 2.1. Sincere apologies for going MIA!

Improved Space Battles (ISB) attempts to improve both the visuals and gameplay of Stellaris's space battles. This is the standalone balance portion of ISB and contains only the additional ship classes and doomsday weapons, without the gameplay changes. For the best experience, use this mod with Improved Space Battles [Graphics] which focuses on graphical tweaks for more epic space battles. This mod is designed for long games in huge (1000+) star galaxies. However you can lower the mod's difficulty for smaller galaxies through Empire policies.




Looking for a challenge?
Try out ISB:Balance which includes massive buffs to FEs, AEs and Crises for an exciting mid - late game.

Courtesy of Crusader Vanguard:
NSC Compatibility Patch
NSC / RS Compatibility Patch
RS Compatibility Patch
New Technologies Overview (v1.5 updated)[]

Firing the Spear of Cassius[]

Erebus, Super-Carrier[]
Micro Jumping[](add-on mod linked at bottom)

Avatar destroying a planet[]
Avatar blown up[]
Avatar Construction Guide[]

Destroying a star system[]

  • A massive super-capital class ship grown from the organic matter discovered near our galactic core. While we do not fully understand the ship or its technologies, we are able to exert some manner of control. It is able to deploy both the Spear of Longinus and Spear of Cassius doomsday weapons.
  • The Ragnarok starts out in an infantile stage. In order to grow its organic core to maturity, it has to consume 40 planets through use of the Spear of Longinus.
  • You may only own one Ragnarok at any time.
  • Designed as an anti-fleet doomsday deployment vessel.
  • The AI can use the Ragnarok and its doomsday weapon against you.

  • A massive super-carrier that manufactures and launches fully-autonomous combat drones during battle.
  • The Erebus launches one drone squadron (10 drones) every 25 days during combat. The drone squadrons last for 90 days, after which they will automatically self-destruct.
  • Designed to destroy enemy fleet support vessels and expose their super-capital ships.

  • A doomsday weapon built into a massive space station. Doom stars are here at last!
  • Extremely effective against other capital ships. However, it is very vulnerable to attacks by swarms of small vessels.
  • Can be used to deploy all available doomsday weapons, including the planet destroyer - Spear of Longinus.
  • Extremely expensive and time consuming to build. Requires completion of a special construction event chain.
  • Cannot be constructed from spaceport. Instead, build a constructor that will deploy an Avatar Construction frame that will start the construction project
  • Defend the construction frame from enemy attacks while it is under construction.
  • Only one Avatar may be owned at any time.

Sun Crusher
  • Doomsday weapon that comes attached to a ship.
  • Destroys star systems, nova'ing the star and turning glassing all planets. Also destroys all ships in the system.
  • Extremely slow. You have to get this ship into orbit around a star to activate it.
  • Other empires will hate you for building/using this. You can, however, use this against crisis invaders with no backlash.

  • Extremely fast and maneuverable super capital ship - it is almost as fast as a destroyer.
  • Only 6 large weapon slots. However, weapons receive a massive damage and attack speed boost. Does not provide any fleetwide auras

  • A massive super-capital ship that is able to deploy low - mid level doomsday weapons.
  • 3 different cores allowing you to choose behaviour and ship characteristics. Either close ranged tank, mid ranged balanced, or long ranged damage dealer.
  • Once researched, unlocks various new fleet-wide auras.
  • Also unlocks doomsday weapons.

Doomsday Weapons
  • Deployed by either Titans or Avatars, these weapons of mass destruction allows you to annihilate enemy planets and populations at a cost. Full details regarding each doomsday weapon can be found in the change notes.

  • Evolutionary Virus
  • Neutronium Kinetic Bombardment
  • Nanite Disassemblers
  • Nanite Deconstructors
  • Mind Control Stimulants
  • Primal Mutation
  • Forced Assimilation

Designed for use with
Popular Discussions View All (17)
Feb 26, 2020 @ 5:20am
PINNED: Bug Reports
Apr 13, 2020 @ 12:53pm
PINNED: Feedback / Suggestions / Ideas
Nov 7, 2017 @ 10:08am
A Place for Random but Very Long Questions
< >
BrianTheMessiah Apr 20 @ 4:58pm 
Update for 3 please!
海王星的眼泪 Apr 11 @ 2:56am 
Update your mod to 2.8.1 please!:steamsad:
SaniK Mar 19 @ 7:51pm 
Update your mod to 2.8.1 please!
frankboi Mar 19 @ 6:05pm 
when will we have the mod's 2.8 version version???
大王吧 Feb 18 @ 6:34am 
May I ask if there is Sinicization:steamhappy:请问有汉化吗
Cobrastan Feb 17 @ 10:39am 
reminder to everyone that there is an updated version of this mod:
spectre199 Feb 15 @ 9:42am 
this mod was very good, no this mod was awesome. Rip an awesome mod
samsockeater Jan 16 @ 1:08am 
rip this mod was awesome
captain_uzziah Jan 11 @ 10:27am 
Ankain i know this mod dead but umm are you going make any more mods or has you left Stellaris for good