How many movies have Jon Mack and Neil Elman collaborated on?

They have worked on 4 movies together! Their first movie together was Mongolian Death Worm (2010) while their highest rated movie together was 2 Lava 2 Lantula! (2016). They have not worked together since 2 Lava 2 Lantula! (2016). They are most known for their science fiction films together.