TechCraft Ultimate is a diverse experience of tech mods and many other unique additions. It features Create along with several addons. There's over 260 mods in this pack, so it definitely will need some good hardware to run smoothly.

The goal of this modpack is to have the ability to automate pretty much everything in the game withough being stuck in a strict progression system that takes 800 years to complete.

I have a longplay series where I play though this pack, which can be found here:

https://www.youtube.com/playlist?list=PLx91ga2D_az7PGk83arUBdxgdRCiS4vWP

Mods included:

mutil (by mickelus)
Depth Meter (by avocadospud)
Ars Nouveau (by baileyholl2)
Clumps (by Jaredlll08)
Air Hop (by Fuzs)
Create Big Cannons (by rbasamoyai)
Cataclysm Boss Bar (by pOtAto__bOy)
Sophisticated Storage (by P3pp3rF1y)
Balm (by BlayTheNinth)
Citadel (by sbom_xela)
Bagus Lib (by baguchiMC)
Quark Delight (by nocubeyt)
Library Ferret - Forge (by jtl_elisa)
Malumian Crates (by AbsolemJackdaw)
Apple Crates (by AbsolemJackdaw)
Ice and Fire: Dragons (by sbom_xela)
B.F. End Cities (by Txni)
Chisels & Bits - For Forge (by AlgorithmX2)
Just Enough Items (JEI) (by mezz)
Back to Bed (by BaKY)
Create Deco (by talrey)
Cristel Lib (by Cristelknight)
Oh The Biomes You'll Go (by AOCAWOL)
Enchantment Descriptions (by DarkhaxDev)
Copper & Tuff Backport (from 1.21) [Fabric | Forge] (by XanthianZ)
Apotheosis (by Shadows_of_Fire)
BedTime (by noxgame1230)
Create : Teleporters (by Chilllliii)
CodeChicken Lib 1.8.+ (by covers1624)
Block Runner [Forge & Fabric] (by Fuzs)
Dense Ores - Abundant! (by NewJumperr)
Mobvote 2023 - Crab (by YourDailyModderx)
SuperMartijn642's Config Lib (by SuperMartijn642)
Hals Enhanced Biomes (by halbear1)
Curios Quark Oddities Backpack (by 6LeoY)
Awesome Dungeon The End edition - Forge (by jtl_elisa)
Dungeons Mobs (by the_infamous_1)
Alex's Mobs (by sbom_xela)
Create: Power Loader (by Lysine)
Create Crafts & Additions (by MRHminer)
Quark Oddities (by Vazkii)
Awesome Dungeon - Forge (by jtl_elisa)
Sildur's Enhanced Default (by Sildur)
Oculus (by Asek3)
Titanium (by Buuz135)
Create Recycle Everything (by nocubeyt)
Better Fps - Render Distance[Forge] (by someaddon)
Unstructured [Fabric/Forge] (by Cristelknight)
Extreme Reactors (by ZeroNoRyouki)
Heavy Ores Mod (FORGE) (by domitero222)
Create: Train Perspective Fix (by MrJulsen)
Friends & Foes (Forge/NeoForge) (Copper Golem,Crab,Glare,Moobloom,Iceologer,Rascal,Tuff Golem,Wildfire,Illusioner) (by Faboslav)
Cloth Config API (Fabric/Forge/NeoForge) (by shedaniel)
Beekeeper (by MacTso)
Dave's Building Extended (by Medic_Main_Dave)
Sodium/Embeddium Dynamic Lights (by Txni)
Assorted Core [Forge/Fabric] (by Grim3212)
Tectonic (by Apollo)
Malum (by sammysemicolon)
Husks Drop Sand [Fabric/Forge/NeoForge] (by Mars)
Upgrade Aquatic (by TeamAbnormals)
Twilight Tweaks (by jodlodi)
TerraBlender (Forge) (by TheAdubbz)
Copper Amulets (by OrzechPL)
It's the little things (by Zlepper)
Stalwart Dungeons (by Furti_Two)
Placebo (by Shadows_of_Fire)
Even More Instruments! (by StavWasPlayZ)
Savage & Ravage (by TeamAbnormals)
Productive Bees (by LobsterJonn)
Nature's Compass (by Chaosyr)
Mekanism Additions (by bradyaidanc)
Mekanism Generators (by bradyaidanc)
Mekanism Tweaks (by nin8995)
Dramatic Doors (by FizzWare)
The Twilight Forest (by Benimatic)
Crossroads MC (by Technomancer_isTaken)
Undergarden/Tetra Patch (by syrikalis)
Backported Wolves (by Emil_SG)
Darker Depths (by naterbobber)
Gem Crabs [ Undergarden ] (by praizazdd7724)
Ender's Delight (by Furti_Two)
Create: Fishing Bobber Detector | Automatic Fishing with Create (by GLaD0S)
Late Game Golems (by Korog_3)
Enhanced Block Entities Reforged (Unofficial) (by ccr4ft3r)
Dynamic FPS (by juliand665)
NoCube's Better Blast Furnace (by nocubeyt)
Abnormals Delight (by TeamAbnormals)
Tinkers Construct (by mDiyo)
Blueprint (by TeamAbnormals)
Mystical Oak Tree (by plantspookable)
Iron Furnaces (by XenoMustache)
Laser Bridges & Doors [Fabric/Forge/NeoForge] (by Mars)
Quark (by Vazkii)
Blood Magic (by WayofTime)
ZeroCore 2 (by ZeroNoRyouki)
Reliquary Reincarnations (by P3pp3rF1y)
YUNG's Better Strongholds (Forge) (by YUNGNICKYOUNG)
Better Title Screen (by Girafi)
Polymorph (Fabric/Forge/Quilt) (by TheIllusiveC4)
Dark Utilities (by DarkhaxDev)
Konkrete [Forge/NeoForge] (by Keksuccino)
Create Utilities (Fabric/Forge) (by duquee___)
Patchouli (by Vazkii)
Tan's Huge Trees (by TannyJung)
Dungeon Crawl (by xiroc_)
Craft 6 Stairs Instead of 4 [Fabric/Forge/NeoForge] (by Mars)
Followers Teleport Too (by Serilum)
Resource Slimes (by Kaupenjoe)
Mouse Tweaks (by YaLTeR)
More Bows and Arrows (by Lupin)
Twilight Forest: The Lost Blocks (by Kitteh6660)
Pyrologer And Friends (by itz_bluejacob)
Farmer's Delight (by vectorwing)
Create Enchantment Industry (by DragonsPlus)
Create: TrainUtilities(Fabric/Forge) (by ProgrammerLP)
Simple Storage Network (by Lothrazar)
Nullscape (by Starmute)
Create Chunkloading (by embeddedt)
Macaw's Roofs (by sketch_macaw)
Just Enough Mekanism Multiblocks (by gisellevonbingen)
Macaw's Roofs - Oh The Biomes You'll Go / Oh The Biomes We've Gone (by Samlegamer_)
Create: Broken Bad (by jetpacker06)
Crafting Automat (by Fereydun)
The Undergarden (by Quek04)
Runelic (by DarkhaxDev)
Creeper Overhaul (by joosh_7889)
Create: Connected (by Lysine)
Twilight Delight (by laokuai233)
Effortless Building (by Requioss)
Xaero's World Map (by xaero96)
L_Ender 's Cataclysm (by mcl_ender)
Champions (by TheIllusiveC4)
The One Probe (by McJty)
Melody (by Keksuccino)
Lost and Fished (by hyperlynx01)
Minecraft Transit Railway (Automated trains, planes, and more!) (by jonafanho)
Rubidium (by Asek3)
More Dragon Eggs (by Darkere)
FancyMenu (by Keksuccino)
Refined Storage (by raoulvdberge)
Balanced Enchantments (by ShinJoy991)
Cataclysm Weaponery (by eyezlevrai)
Tetra (by mickelus)
Enemy Expansion (by InfernalStudios)
Mekanism Cardboard Tooltip (by Christofmeg)
Twilight Forest Bosses Resurrection (by Niketats_live)
Create: Steam 'n' Rails (by IThundxr)
Ender Storage 1.8.+ (by covers1624)
ChoiceTheorem's Overhauled Village (by ChoiceTheorem)
Advanced Mining Dimension (by henkelmax)
Pipez (by henkelmax)
Gems & Jewels (by sea_leaf)
Enchant With Mob (by baguchiMC)
Create: Ender Transmission (by Forsteri123)
Collective (by Serilum)
Create: Foundry (by CommanderT3706)
YUNG's Better Mineshafts (Forge) (by YUNGNICKYOUNG)
Simple Hammers (by rendy)
Moonlight Lib (by MehVahdJukaar)
Atmospheric (by TeamAbnormals)
Create Confectionery (by Furti_Two)
Essentials (by Technomancer_isTaken)
Dash (by ModdingLegacy)
The Lost Cities (by McJty)
Amplified Nether (by Starmute)
Depth Striders (by GlitchedMastery)
Create: Modern Train Parts (by dugske)
Simple Automation (by WoroxIV)
Autumnity (by TeamAbnormals)
Easy Redstone Extras (by MacTso)
Environmental (by TeamAbnormals)
Create Ore Excavation (by tom54541)
Dungeons Libraries (by Patrigan)
Create: Big Contraptions (by MuriPlz)
Undergarden Paths (by xaidee)
Queen Bee (by Cerbon)
Architectury API (Fabric/Forge/NeoForge) (by shedaniel)
Create: Balanced Flight (Angel Ring) (by Txni)
Lucky's Blocky Siege (by LuckyOwl)
Puzzles Lib [Forge & Fabric] (by Fuzs)
Industrial Foregoing (by Buuz135)
SuperMartijn642's Core Lib (by SuperMartijn642)
One Twenty 1.20 Backport (by kleiders3010)
Gem Crabs (by praizazdd7724)
Shutup Experimental Settings! (by Corgi_Taco)
Lodestone (by sammysemicolon)
Every Compat (Wood Good) (by MehVahdJukaar)
Framework (by MrCrayfish)
Ice and Fire: Dragonseeker (by syrikalis)
Assembly Line Machines (by haydenman2)
Tree Harvester (by Serilum)
Create: Steam Powered Revived (by jetpacker06)
End's Phantasm (by Lyof429)
Sophisticated Core (by P3pp3rF1y)
Fix Experience Bug (now with FABRIC and FORGE versions) (by MacTso)
Create: Extended Cogwheels (by Rabbitminers)
Potion Blender (by motivational_dragon)
Pig Pen Cipher (by DarkhaxDev)
Explorer's Compass (by Chaosyr)
Mekanism (by bradyaidanc)
Structure Gel API (by ModdingLegacy)
Refined Storage Addons (by raoulvdberge)
Create Train Additions (by M_Productions)
Easy Villagers (by henkelmax)
Chunk Loaders (by SuperMartijn642)
Little Tractor (by DragN0007)
Ars Creo (by baileyholl2)
YUNG's API (Forge) (by YUNGNICKYOUNG)
Building Gadgets (by Direwolf20)
Create Compats (by nocubeyt)
Create Stuff & Additions (by Furti_Two)
New Cave Biomes! (by klsts2)
GeckoLib (by Gecko)
Modern Debugify (by 000_shadowake_AMP)
Philip's Ruins (by philipmoddev)
AppleSkin (by squeek502)
Reforgium (by Asek3)
Alex's Tamables (An Alex's Mobs Addon) (by JayZX535)
Max Health Fix (by DarkhaxDev)
Snowy Spirit (by MehVahdJukaar)
Mekanism Tools (by bradyaidanc)
Timeless and Classics Guns (by TheRealClumsyAlien)
Xaero's Minimap (by xaero96)
Geyser Mod (by przemykomo)
Create Compressed (by nocubeyt)
Dungeons Plus (by ModdingLegacy)
Leon's Backport Paintings 1.21 (by Leonxkingx)
ModernFix (by embeddedt)
Cobbled Deepslate Generator (by rin_ofaris)
Better Tridents [Forge & Fabric] (by Fuzs)
Create: Liquid Fuel (by Forsteri123)
Assorted Tech [Forge/Fabric] (by Grim3212)
YUNG's Better Dungeons (Forge) (by YUNGNICKYOUNG)
Create (by simibubi)
Genshin Instruments (by StavWasPlayZ)
Mowzie's Mobs (by bobmowzie)
Create Railways Navigator (by MrJulsen)
Clay No More Balanced (by rawchickenneg)
AutoRegLib (by Vazkii)
Sodium/Embeddium Extras (by Txni)
FerriteCore ((Neo)Forge) (by malte0811)
Mining Gadgets (by Direwolf20)
Simple Weapons for Better Combat (by InfernalEclipse)
Entity Culling Fabric/Forge (by tr7zw)
Capsule (by Lythom)
Vanilla Zoom (by Serilum)
Curios API (Forge/NeoForge) (by TheIllusiveC4)
Assorted Storage [Forge/Fabric] (by Grim3212)
Awesome Dungeon Ocean edition - Forge (by jtl_elisa)
Lazy DataFixerUpper(LazyDFU) [FORGE] (by Corgi_Taco)
Supplementaries (by MehVahdJukaar)
Akashic Tome (by Vazkii)
Kotlin for Forge (by thedarkcolour)
Bookshelf (by DarkhaxDev)
Mining Master (by InfernalStudios)
Mantle (by mDiyo)
Falling Leaves (NeoForge/Forge) (by Cheaterpaul)
Undergarden Delight (A Farmer's Delight Add-on) (by nocubeyt)
Create: Electric Trains (by Pancake_01_)
Unusual End (by Sweetygamer)
Bosses of Mass Destruction [Forge | NeoForge] (by Cerbon)
Create: Dreams & Desires (by Luna)
Alex's Delight (by NCP_Bails)
Create Slice & Dice (by possible_triangle)
Iris/Oculus & GeckoLib Compat (by ElocinDev)
Detected setBlock Be Gone (by CapezOnMyBack)

Other Notes:

-This project is still in development. I have played it a bit and found no major crashes, but some problems may still be present.