 Catching a falling human after destroying an enemy will grant a wave shot that destroys enemies and is harmless for the humans and if a droid ship grabs a falling human, will grant fire capabilities for it as well.If a human is successfully abducted by the enemy, they not only turn into mutants that attacks the Threshold ship, but will also leave a falling headstone capable of harming the player's ship as well.Also new to "Defender 2000" are bonus levels, which can be accessed by collecting a number of warp powerups and if they are successfully cleared, allows the player to skip five levels ahead.