Game Elements

Sakolused to read a novel that the protagonist received a System after transmigrated to another world.  But he doesn't remember ever reading a novel where System had a direct game theme. Well, he didn't read many novels because he spends almost all of free time playing games.

What would he do with “Snapping feature” in this magical and monster-filled fantasy world? Not to mention the environment and society with a totally different view of morality.