A free mod for 7 Days To Die, by Will.
The Skill Tree Crafting Redux (A18) mod is one that allows you to create a skill tree for your character. The idea is that this is a new and different way to game, where the player can develop their skills and become the ultimate master of their craft.
In this mod, there are so many different skills that you can choose from. You can also choose which abilities you want to develop and which ones you do not want to develop. Unlocking a tier also unlocks recipes you can try crafting.
