This is a technical modack where the main mod is Nuclear Tech. The author recommends playing it in multiplayer.
There is no plot and limits, and there are no changed recipes. The goal of survival is to evolve in teams and build bunkers, and then make a HUGE BOOM and see who has the strongest bunker. Also author strongly recommend to use optifine.

Full modlist

Alchemistry (by Dark_Arcana)
Redstone Arsenal (by TeamCoFH)
MTLib (by Jaredlll08)
FoamFix (by asiekierka)
Tesseract (by SuperMartijn642)
CoFH World (by TeamCoFH)
Mouse Tweaks (by YaLTeR)
Inventory Tweaks [1.12 only] (by JimeoWan)
Hbm's Nuclear Tech Mod Reloaded (by TheOriginalGolem)
JAOPCA (by TheLMiffy1111)
WrapUp (by TheLMiffy1111)
AE2 Wireless Terminal Library (by TheRealp455w0rd)
Just Enough Items (JEI) (by mezz)
Project Red - Fabrication (by MrTJP)
Advanced Solars Classic (by trinsdar)
Reborn Core (by modmuss50)
Bookshelf (by DarkhaxDev)
IC2 Classic (by sfPlayer1)
iChunUtil (by iChun)
Gravisuit Classic (by trinsdar)
SuperMartijn642's Config Lib (by SuperMartijn642)
Applied Energistics 2 (by thetechnici4n)
MineTweaker RecipeMaker (by DoubleDoorDev)
Extra Utilities (by RWTema)
VanillaFix (by Runemoro)
CB Multipart (by covers1624)
Solar Flux Reborn (by Zeith)
MalisisAdvert (by Ordinastie)
SteveKunG's Lib (by SteveKunG)
QMD (by lach_01298)
Phosphor (Forge) (by jellysquid3_)
ZeroCore 2 (by ZeroNoRyouki)
WanionLib (by WanionCane)
Controlling (by Jaredlll08)
Thermal Expansion (by TeamCoFH)
Modular Powersuits (by machinemuse)
Wireless Pattern Terminal (by TheRealp455w0rd)
SuperMartijn642's Core Lib (by SuperMartijn642)
Lazy AE2 (by phantamanta44)
MalisisBlocks (by Ordinastie)
Resource Loader (by Lumien231)
Thermal Foundation (by TeamCoFH)
NuclearCraft: Overhauled (by tomdodd4598)
Immersive Petroleum (by Flaxbeard)
Mob Grinding Utils (by vadis365)
Steve's Carts Reborn (by modmuss50)
MalisisDoors (by Ordinastie)
Item Blacklist (by DoubleDoorDev)
McJtyLib (by McJty)
UniDict (by WanionCane)
Redstone Flux (by TeamCoFH)
Patchouli (by Vazkii)
AppleSkin (by squeek502)
RandomPatches (Forge) (by TheRandomLabs)
p455w0rd's Library (by TheRealp455w0rd)
Industrial Foregoing (by Buuz135)
Mixin 0.7-0.8 Compatibility (by NotStirred)
Numina (by machinemuse)
BetterFps (by Guichaguri)
MrCrayfish's Furniture Mod (by MrCrayfish)
Reap Mod (by henkelmax)
Simply Jetpacks 2 (by Tomson124)
No Recipe Book (by Adorn)
Project Red - Core (by MrTJP)
OAuth (by Sintinium)
IC2C Extras (by trinsdar)
AlchemyLib (by Dark_Arcana)
MixinBooter (by CleanroomMC)
Chicken Chunks 1.8.+ (by covers1624)
OMLib (by Keridos)
Tinker's JEI (by possible_triangle)
Thermal Innovation (by TeamCoFH)
Guide-API (by TehNut)
TickCentral (by Terminator_NL)
Better Builder's Wands (by Portablejim)
Bad Wither No Cookie - Reloaded (by Kreezxil)
Bad Mobs (by DarkhaxDev)
Classic Combat (by WildBamaBoy)
MalisisCore (by Ordinastie)
Shadowfacts' Forgelin (by ShadowfactsDev)
The One Probe (by McJty)
Thermal Dynamics (by TeamCoFH)
Mekanism (by bradyaidanc)
Mekanism Tools (by bradyaidanc)
Tinkers Construct (by mDiyo)
Overloaded Armor Bar (by tfarecnim)
Random Things (by Lumien231)
Open Modular Passive Defense (by Keridos)
Carry On (by Tschipp)
NotEnoughIDs (by fewizz_)
CraftTweaker (by Jaredlll08)
Clumps (by Jaredlll08)
Open Modular Turrets (by Keridos)
Railcraft (by Covert_Jaguar)
LagGoggles (by Terminator_NL)
Wireless Redstone CBE (by covers1624)
Mekanism Generators (by bradyaidanc)
CoFH Core (by TeamCoFH)
Actually Additions (by Ellpeck)
Gauges and Switches (by wilechaote)
JourneyMap (by techbrew)
Wireless Crafting Terminal (by TheRealp455w0rd)
LibNine (by phantamanta44)
Baubles (by Azanor13)
ICBM - Classic (by QueenOfMissiles)
AE2 Wireless Interface Terminal (by TheRealp455w0rd)
AE2 Wireless Fluid Terminal (by TheRealp455w0rd)
Just Enough Reactors (by BrainStone)
LLibrary (by MCModDev)
Iron Chests (by ProgWML6)
Tesla Core Lib (by face_of_cat)
Future MC (by thedarkcolour)
OpenModsLib (by OpenMods)
CodeChicken Lib 1.8.+ (by covers1624)
Extreme Reactors (by ZeroNoRyouki)
Immersive Engineering (by BluSunrize)
MalisisSwitches (by Ordinastie)
Just Enough Energistics (JEE) (by TheRealp455w0rd)
Ender Storage 1.8.+ (by covers1624)
OpenBlocks (by OpenMods)
Project Red - Integration (by MrTJP)
MrTJPCore (by MrTJP)
Actually Baubles (by Jacky)
Engineer's Doors (by nihiltres)
Mantle (by mDiyo)

Nuclear Hirosima

Actually Additions

Actually Baubles

Advanced Solars Classic

AE2 Wireless Fluid Terminal

AE2 Wireless Interface Terminal

AE2 Wireless Terminal Library

Alchemistry

AlchemyLib

AppleSkin

Applied Energistics 2

B.A.S.E

Bad Mobs

Bad Wither No Cookie - Reloaded

Baubles

Better Builder's Wands

BetterFps

Bookshelf

Carry On

CB Multipart

Chameleon