New Update Notes:

Update 1.5 The Last Update

Sadly the source files for the mod have been lost, dificulting the maintenance of the mod. Luckily we were able to do a last update to make the mod compatible with the recent SR2 updates, adding fuel grains to the solid fuels and improving how the name of some of the fuel types is displayed.

Update 1.4 Mono Propellant Motor Update

Laid the groundwork for a new engine type, Mono prop motors. There is two nozzles as of now, a normal bell nozzle and an angled one, as well as 5 new fuels, Hydrazine, MMH, H2O2 100%, 90%, and 75%.
I've also reworked the electrical consumption of the electric and Vasimr engines since they consumed way to much electricity.

Update 1.3 Electricity Update

This update adds electricity consumption to The Electric and Vasimr engines, and adds electrical production to all engine power cycles with a preburner & turbopump.

Update 1.2 Futuristic Update

Includes New Models and nozzles for Liquid and Solid core NTRS and for pulsed aswell as a new category for them 'Nuclear Advanced'. it also includes the new Vasimr Engine with new Fuels H2, N2, and He. (problems with the electrical comsuption modifier have delayed its progress). This update also adds throttle limits to all engines and removes RP-1 fuels from Full flow

Stock Engine Overhaul is a Stock version of realistic engine Overhaul, this version has stock engine efficiencies for use in the stock system.

Warning: SEO and REO are not compatible if enabled at the same time! make sure you have REO disabled before enabling Stock engine overhaul. REO engines can be opened with SEO, the efficiencies will change as a result.
REO link can be found here
- List of All New Propellants:

Oxidizer: Lqd Oxygen, NTO, N2O, RFNA, H2O2 95% / 75%
Fuels: RP1, Lqd Hydrogen, Lqd Methane, UDMH, UH25, Aerozine-50, Hydrazine, Ammonia, MMH, Methanol, Ethanol 75% / 95%, Tonka-250
Hybrid fuels: HTPB/LOX, HTPB/NTO, HTPB/N20, HTPB/H202(95%), HTPB/H202(85%)
NTR fuels: LH2, H2O, Ammonia, Lqd Oxygen
Mono: H2O2(100%)
Vasimr: H2, N2, He

-List of All New Power Cycles:
  • Expander, Dual expander, Combustion Tap Off, Open Expander, dual open expander, Fuel Rich staged, Oxygen Rich Staged
  • New NTRs solid, gas, and liquid cores, aswell as pulsed NTRs
  • New engine type Vasimr
  • New engine type MonoProp motor
-All New Nozzles:
  • New replacements for Bravo, Omega, and Alpha
  • redstone nozzle modeled after the A-7
  • Nuclear Regenerative Nozzle
  • Extended Nuclear Nozzle
  • Omega B modeled after F-1B
  • AJ-10 (modeled after the LMDE)
  • Proton A (based on RD-253)
  • NK-33
  • J-2
  • RL-10
  • H-1

Mod made by the Complex rockets team


  • Mod Version: Full Release 1.5
  • Required Juno: New Origins Version: 0.9.917.1
  • Published: 8/10/2019
  • Downloads: 12386




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  • Profile image
    45.3k MarioG

    @jxspitzxj there seems to be a bug that with engine types that produce electricity you need some sort of battery to get it to work

    Pinned 3.8 years ago
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    45.3k MarioG

    read the comments there is no and never will be any possiblity for mobile mods

    Pinned 4.3 years ago
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    175 lhanfei04

    You forgot to lower the specific impulse of the Combustion tap-off cycle rocket engine, which is actually the same as REO.

    10 months ago
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    Update to 0.920

    1.4 years ago
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    update since the last post: I still have the same problem. Using the latest experimental beta because I like updates. The mod is loaded but the extra engine types and fuels can't be accessed in part settings. I doubt it's a problem caused by other mods (namely Realistic Engine Overhaul which is kind of an addon to this or RSS Overhaul which is just balancing.)

    1.6 years ago
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    @XAEA12 I'll try again. I turned on the betas on steam and on an update (exact vers I can't remember rn) for some reason it stopped working altogether essentially killing all my designs thus far.

    1.6 years ago
  • Profile image
    30 XAEA12

    @Pedro1745 seems to be workin fine for me

    +1 1.6 years ago
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    Hey could you update to the latest SR2 version? thanks

    1.6 years ago
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    538 KERBQ

    @UenoFox Why not cancel the use of computer modules in mobile phones?

    1.7 years ago
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    fix pleaseeee i love this mod

    1.8 years ago
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    @KellyNyanbinary still unfair

    +1 1.9 years ago
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    @ProfessorTechnik288 Because Google and Apple do not allow it.

    1.9 years ago
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    @MarioG that's unfair. why no possibility for mobile mods

    1.9 years ago
  • Profile image

    @MarioG warum

    1.9 years ago
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    New update broke it.

    2.0 years ago
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    A-some mod

    2.0 years ago
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    so I managed to stuff it into an android. it took me a long time and it was very complicated, but finally the modes work in Android 9 (ASUS ROG PHONE) 😉👌

    +6 2.1 years ago
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    what is the green fuel

    2.4 years ago
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    No @arnstrons3

    2.4 years ago
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    Es posible correrlo en mobile

    +1 2.4 years ago
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    PlZ hoW dOwNdLoAd mOd mE oN IoS

    +1 2.5 years ago
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    That is impossible @wolfyplayz

    2.5 years ago
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    Can you make a link to download it but compatible with mobile

    +1 2.5 years ago
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    3,816 LouisBorlee

    Everyone wants to use this mod on their mobile phones, but jundroo already has a Google agreement, and the mobile phone can't use the mod for computers😂😂😂

    +2 2.6 years ago
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    @KellyNyanbinary oh. Google and apple shouldn’t do that

    2.7 years ago
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