The 1994 seminal classic Earthworm Jim stood out from its contemporaries with its focus on hand-drawn animation scanned in from traditional paper linework – a process referred to as “Animotion” by animation director Mike Dietz. Here is a gallery of pencil test animation artwork, shared an his blog.

Included with the Behind The Scenes at Sega: The Making of a Video Game book (1994) is an entire chapter on Animating The Characters & Action Sequences featuring Earthworm Jim. Here is a selection of more drawings, including animation direction notes.