Find different ways to defeat the queen and the king. Explore the space if you get bored of the overworld. Battle boss in space if you want. Also build a park with all the mob in the pack maybe not the boss. These are my favorite mods so far.

Here is a youtuber that has a sires on this pack mod list underneath the vid

https://www.youtube.com/watch?v=T_hWFx1a9BI&list=PLbG-5u1hlrOSxBrbtG56QRXhQY9PwuQ51

(fast leaf decay is in. still working on fixing the file still)

LambdaLib (by WeAthFolD)
AcademyCraft (by WeAthFolD)
Academy Monster (by paindarx)
Blood Magic (by WayofTime)
BetterBedrockGen (by Gigabit1011)
Ars Magica 2 (by Torarion)
CodeChickenCore (by chicken_bones)
NotEnoughItems (by chicken_bones)
LootBags (by Malorolam)
NEIlootbags (by Gigabit1011)
Minefactory Reloaded (by skyboy026)
CoFH Core (by TeamCoFH)
Moo Fluids (by TheRoBrit)
Ranchable Fluid Cows (by JDLogic)
Grimoire of Gaia (by Silentine)
Traveller's Gear (by BluSunrize)
Botania (by Vazkii)
Talismans 2 (by Gigabit1011)
BaublesHud (by Gigabit1011)
LLibrary (by iLexiconn)
Fossils and Archeology Revival (by FossilsRevival)
Mantle (by mDiyo)
Tinkers Construct (by mDiyo)
McJtyLib (by McJty)
RFTools (by McJty)
Extra Utilities (by RWTema)
Natura (by mDiyo)
EnderCore (by tterrag1098)
Ender IO (by CrazyPants_MC)
Ender Storage (by chicken_bones)
ShetiPhianCore (by ShetiPhian)
EnderTanks (by ShetiPhian)
ChickenChunks (by chicken_bones)
Chicken Chunk Patcher (by Chocohead)
DeathQuotes / Death Quotes (by andrenoel1)
Better Builder's Wands (by Portablejim)
Brandon's Core (by brandon3055)
BdLib (by bdew)
Advanced Generators (by bdew)
Draconic Evolution (by brandon3055)
Buildcraft (by CovertJaguar)
NEI Addons (by bdew)
OpenModularTurrets (by Keridos)
Redstone Paste (by FyberOptic)
Big Reactors (by ErogenousBeef)
NetherOres (by skyboy026)
Witchery (by Emoniph)
Dense Ores (by RWTema)
Translocators (by chicken_bones)
Creeper Confetti (by SR261097)
Tinkers' Mechworks (by mDiyo)
WorldEdit (by sk89q)
ArchitectureCraft (by gcewing)
Hardcore Wither (by thor12022)
RadixCore (by WildBamaBoy)
Minecraft Comes Alive (MCA) (by WildBamaBoy)
Slug's Magic Resistance Mod! (by _Slug)
Magical Crops: Core - 1.12 BETA! (by Mark719)
AnimationAPI (by thehippomaster21)
Road Stuff (by KillerMapper)
FoxLib (by KitsuneKihira)
Tails (by KitsuneKihira)
GraveStone Mod (by EuhDawson)
No Mob Spawning on Trees (by oldjunyi)
NEI Integration (by tonius111)
Waterhook (by Henry_Loenwind)
Ender IO Addons (by Henry_Loenwind)
Baublelicious (by DenBukki)
Additional-Buildcraft-Objects (by DA3DSOUL)
Ender Zoo (by CrazyPants_MC)
Headcrumbs (by ganymedes01)
WitherCrumbs (by turkey2349)
NotEnoughResources (by Way2muchnoise)
Mob Properties (by docrobb)
Deadly World (by docrobb)
BetterFps (by Guichaguri)
CoroUtil (by Corosus)
Weather, Storms & Tornadoes (by Corosus)
Waypoints (by kamildanak)
iChunUtil (by iChun)
Portal Gun (by iChun)
Iron Tanks (by Indemnity83)
littleMaidMobX (by eromanrocks)
Falling Meteors Mod (by AlexDGr8r)
ShinColle (by lulan2)
Waila (by ProfMobius)
WAILA Plugins (by tterrag1098)
WAILA-features (by Way2muchnoise)
Waila Events (by Darkhax)
WAILA Blacklist (by SanityCh3ck)
WailaAddonBC (by pome315)
Waila Inhibitors (by Darkhax)
Applied Energistics 2 (by AlgorithmX2)
ProjectE (by sinkillerj)
Applied Exchange (by Simon040900)
Galacticraft Ex (by master130j)
orespawn
galacticarft

mod to be put in to help with lag and carts

Astikor [Horse Carts] (by MennoMax)

Born in a Barn (by Speiger)

mods that will be removed do to lag

Fast Leaf Decay (by Olafskii)

Soulis