Recommended Mods:
Any kind of minimap:
Voxelmap/
Journeymap/
Xaero's Minimap/
Antique Atlas/
Mapwriter 2/Etc.
A minimap greatly enhances your experience playing with ExPetrum.
In ExPetrum you will need to explore a lot to find the items you need to progress. As such knowing where your home is at all times is essential.
Additionally if you happen to find an ore cluster having the ability to mark it in any way is very helpful.
Nutrition
Nutrition is a mod designed to make you eat different kinds of food instead of sticking to one for the rest of time.
It is recommended since eating healthy and gaining benefits from it is realistic.
ExPetrum has a compatibility patch with Nutrition so various food added by ExPetrum contributes to nutrition levels.
This mod will enhance your gameplay by making you search/create different food instead of sticking to a group of fruit trees you found earlier.
Chisel And Bits
Chisel and bits is a mod that allows you to build finer details by allowing you to chisel off bits of blocks.
It will help you build more realistic buildings as in real life not everything is square.
ExPetrum doesn't include this feature since there is already a mod that does exactly this - and this is the mod being recommended to you right now.
ExPetrum has a compatibility patch with Chisel And Bits allowing you to craft chisels from that mod by using chisels added by ExPetrum.
Just Enough Items
Just Enough Items is a recipe lookup mod.
ExPetrum adds quite a lot of different recipes and methods of crafting and the wiki isn't 100% complete exactly bacause JEI exists.
In game you will need to constantly consult with something to know how to craft the items you need and JEI is the prime candidate.
Additionally if you have other mods installed JEI will show you the recipes for blocks/items/fluids added by those mods aswell.
ExPetrum has a compatibility patch with JEI allowing you to see recipes added by ExPetrum even if they are done in an exotic manner(for example JEI allows you to see alloy compositions).