The Shadow System plugin is a Solo Leveling–inspired RPG where players start at level 1 with F-rank and level up by gaining XP from mobs, mining, and dungeons. A main GUI (opened with an item like a Nether Star) gives access to menus for stats, rank, dungeons, shadows, and quests. Players can upgrade attributes like strength, speed, and health, while progressing from F to S rank by meeting level and boss requirements. Dungeons feature wave-based combat with bosses and strong rewards. The Shadow system lets players extract defeated mobs and summon them as companions, with limits based on rank. Quests provide daily objectives for bonus XP and rewards. All features use simple, clean GUI interactions for smooth gameplay.