Dune: Awakening's sandworms: a force of nature, not a player's tool. Unlike the books, players can't summon sandworms.
Image: steamcommunity.com
The developers have designed sandworms as independent NPCs with programmed patrol routes and behaviors. While you can't summon them, actions like moving through the sand or using a thumper might attract their attention, but there's no guarantee. Riding sandworms, a key element of Freman culture in the books, is also absent, due to constraints from the Dune film franchise.
Future updates could add Freman-related content, possibly including worm-riding, but this isn't confirmed.
Dune: Awakening launches on PC May 20th, with console releases to follow.