Saving Content writes:
The Gunk comes from Thunderful Development, formerly known as Image & Form. While not a SteamWorld game, it has the intimate characteristics that have made those games such successes: tight gameplay, a rousing story, and unmatched exploration. While the story beats are formulaic and well-worn territory, it maintains your interest throughout to uncover this wide-reaching mystery.
Source: N4G PC The Gunk Review – Saving Content