- The secret Nuke Button has assigned a level tag of 8, which basically takes the player back to the User map level slot. Although, if the player presses it for a second time, the player will be taken to another level.
- There is a left-over Space Suit along with the rest of the items.
- It can be easily noted that the Overlord, differently from the Battlelord, can step on water surfaces, and subsequently submerge. This differs from the Cycloid Emperor, which can only step in sectors with a specific tag (which is used so that it will not leave the main area of the Stadium level).
- The Alien Queen is placed outside water.