With a Game System, You Say This Is Not a Game?

Lu Jie always thought that he was in the game, he was a player, and he was surrounded by NPCs. It has a backpack, an equipment slot, the ability to add points, a skill tree, and even achievements, battle orders, and a mall system. This is obviously a game, I'm just trapped in the game and can't get out. He really plays it like a game. Collect all the beauties, kill all the enemies, and the NPC dares to compete with me. Turn it into my experience pack and explode props for me. Until he cleared this "game" and trampled all the worlds under his feet, he still couldn't quit. Only then did he realize that he had really traveled through time.