UFOs
This article is about the Classic Trilogy UFOs. For the UFOs in Planet of the Z-Bots, see Z-Bots#UFOs.
UFOs are moving enemies that shoot Fireballs. When UFOs collide with an object or a tile, such as a Wall, a Coin or another enemy, they turn in their preferred direction if possible; if not, they turn in a different direction. If a Stinker is lined up with a UFO horizontally or vertically, it will shoot fireballs at that Stinker. 4 UFOs each are generated by UFO Motherships if all of the UFOs present in the level get destroyed. Their movement is faster than a Coily and slower than a Kaboom!.
UFOs can float over Water and Lava, but are blocked by Empty Space.
Appearance
UFOs are blue with several yellow lights on their edges. They make a sputtering sound about every 1.5 seconds.