If you look at one of the screenshots, then basically everything you see can be interacted with. You don't have to, but you can, and by doing so, you can gain an advantage. Basically it's one big playground where you can try out stuff to see what happens. But it's not limited to objects. Creating a skill system in the form of a tech tree is a great idea.
Every skill has a certain cost expressed in experience points attached to it.
The player selects the skill he wants to research and when he has accumulated enough experience points he gains access to the skill, and gets the option to research a new skill. In addition to the way the player handles his primary statistics, the skill system is predominant in the area of character development. Way of the survivor These initial paths are available to the player upon startup. The player can gain access to skills represented in the other ways, but at a severe experience cost. The experience cost corresponds to the cost of the next level up.