This content is exclusive to Pixel Gun 3D. It isn't in Pixel Gun World!
Night Pool is a Duel multiplayer map introduced in the 11.0.0 update.
This is basically the exact replica of Pool Party, except that it is darker, thus being called Night Pool. It has been illuminated by some yellow, white and red lights, which the day version does not have. The background buildings have lit rooms.
Rocket jump with the 0xBadc0de frequently, and try to be accurate and shoot the player with an instant bullet travel time, high lethal weapon like the Anti-Hero Rifle, or even the Tactical Bow, which is quite lethal, and has a very large hitbox.
When encountering your opponent in the hallways, try using the Ghost Lantern, as the hitbox is as large as a hallway in this map.