Modeled and animated inside Blender.
Smoke/Fire and particle simulations done in Houdini.
RBD Sim and Cloaking/materialization effects also in Houdini.
Rendered with Octane.
A few simple particle effects done with Fusion.
Compositing done with Fusion and After Effects.
UFO Landing
UFO Firing a Laser
UFO Transition
UFO Levitation
UFO Materialization
UFO Crash