Serious Sam 4: Planet Badass has been announced. Croatian developer Croteam revealed the new game on home soil this morning during the opening Reboot Develop 2018 keynote, where Eurogamer was in attendance.
Few details were shared. All we saw was a teaser trailer of the main character on a Harley-style motorbike roaring through a sunny and green countryside. Then, from the surrounding fields, familiar headless exploding enemies began charging at him. The trailer ended as he rode over a hill and encountered a familiar horde of enemies bearing down on him. How typically Serious Sam!
Croteam said we'd find out more via Devolver at this summer's E3. Skip the below video to about 23 minutes in.