The 星雲浮怪 is a 困難模式, post-拜月教邪教徒 flying 敵怪 that spawns near the 星雲柱 during the 月亮事件. It periodically spawns miniature eyes that float around it. Its main attack is either ramming into the player, or by distancing itself and proceeding to shoot a pink Nebula Laser from one of its followers at you, dealing significant amounts of damage. It will also try to teleport around the player while firing its laser, appearing to do this more often in 專家模式. It is one of the enemies of the Nebula Wave that must be paid attention to. They are somewhat common and in groups can overwhelm the player.
- Using 武器s that are useful for crowd control can come in handy when dealing with large groups of Nebula Floaters. If you already defeated the 日耀柱, the 日耀噴發劍 would be great weapon of choice.
- The lasers leave a trail on their path, making it easy to tell where they're shooting you from. These are not to be confused with the lines coming from slain enemies, which are yellow and red in color.
- The appearance and actions of the Nebula Floater closely resemble that of 克蘇魯之腦.