I've seen clips of them using the more esoteric electronic instruments like the Lyra 8 and the Resonant Garden, which may explain some of the interesting and uncommons-sounding FX you hear in their work.
And it also goes to show that while it’s possible to re-create similar sounds in a DAW, these hardware instruments were an integral part of the original creation process (mood, texture, composition, etc). The use of the Swarmatron defined some of the key aspects of the soundtrack.
A fun video on the use of the Swarmatron in the score for those who haven’t seen it: https://youtu.be/uuM4yBFI03E