How many movies have Ondřej Sláma and Petr Šplíchal collaborated on?

They have worked on 3 movies together! Their first movie together was A Sound of Thunder (2005) while their highest rated movie together was The Ash Lad: In Search of the Golden Castle (2019). They have not worked together since The Ash Lad: In Search of the Golden Castle (2019). They are most known for their adventure films together.