Multi Flies

Multi Flies or Tetromino Flies are big clumps of flies that will split into more upon death

Behavior

 * Slowly follows Isaac.
 * Upon death, a multi fly will split into a combination of Attack Flies, Flying Bombs, Moters or Multi Flies.

Trivia

 * Vertical Moters are identical to Moters from the original game.

Bugs

 * Vertical Moters do not split into Flying Bombs.