This pack is based around Minecolonies and tech mods with a few other mods and it can be casual or challenging as you want it to be. It's called NessusCraft, this modpack was meant to be at first a private twitch series modpack but has been decided to be released public!
Minecolonies will allow you to create your own colony where citizens will obey your will. Mainly, they will build, gather resources, upgrade their buildings and all of that under your control. You will plan and command their moves.

*Make sure to join our discord! - https://discord.gg/kHqjqcu*

Features:

Colonize

Create your own colony with Minecolonies mod. Manage many NPC workers, ranging from Builders, Crafters and Farmers, to Guards, Enchanters, and Alchemists, the mod provides the ability to create a unique Colony with many many inhabitants.

Process

We have mekanism! An OP mod.
We have cooking for blockheads! A Multiblock kitchen;
Bees! Yes, we have forestry!

and even more:

Veinminer for easier resource gathering;
Various improvements and tweaks to vanilla minecraft
Less than 100 mods!

Recommendations:

Recommended minimum allocated RAM: 3 GB
Shaders
A nice resourcepack something like Faithful java
Join our server at play.nessuscraft.com

NessusCraft

Actually Additions

AppleSkin

Baubles

BetterFps

Biomes O' Plenty

Bookshelf

CB Multipart

Chameleon

Chance Cubes

Chisel

Clumps

CodeChicken Lib 1.8.+

CoFH Core

CoFH World

ConnectedTexturesMod

Construct's Armory

Cooking for Blockheads

Crafting Tweaks

Dark Utilities

Ding (Forge)