game_world = {
    "player": {
        "name": "Player 1",
        "level": 1,
        "xp": 0,
        "inventory": {
            "sword": {"power": 10},
            "armor": {"defense": 5},
        },
    },
    "cheat_menu": {
        "health_points": {"description": "Add 100 health points"},
        "max_health_points": {"description": "Set maximum health points to 500"},
        "power_up": {"description": "Increase the power of your sword by 100"},
        "power_down": {"description": "Decrease the power of your sword by 100"},
    },
}


def activate_cheat(cheat_name):
    player = game_world["player"]
    cheat_effect = game_world["cheat_menu"][cheat_name]

    if cheat_name == "health_points":
        player["hp"] += 100
    elif cheat_name == "max_health_points":
        player["max_hp"] = 500
    elif cheat_name == "power_up":
        player["inventory"]["sword"]["power"] += 100
    elif cheat_name == "power_down":
        player["inventory"]["sword"]["power"] -= 100

    print(f"Cheat '{cheat_name}' activated: {cheat_effect['description']}")


# Test the function
activate_cheat("health_points")
activate_cheat("power_up")