Michael KOELSCH worked as art director at Shiny Entertainment from 1995 to 1997. (source: Lindekin).
"I had a short stint with Shiny Entertainment in the mid-nineties illustrating the character (Earthworm Jim) to coincide with the video games doing all the game box designs, advertising and packaging." (source: interview featured on Voyagela)
Games
Other video game related works
Gallery
Discworld II - Missing, presumed... !? (PC - 1996, PS1 - 1997)
Cover art for the US version (Source: signature found on the artwork)
Earthworm Jim / アースワーム・ジム (Mega Drive, SNES - 1994, Game Boy, Game Gear - 1995, Master System - 1997, GBA - 2001)
Cover art, promotional illustrations (Source: signature found on the artwork)
.Note: one of the promotional illustrations was later used for the cover of the Mega-CD version of Earthworm Jim: Special Edition (1995)
Earthworm Jim 2 / アースワーム・ジム２ (Mega Drive, SNES - 1995, Saturn, PS1 - 1996)
Cover art, promotional illustrations (Source: signature found on the artwork)
Earthworm Jim: Special Edition (Windows - 1995)
Cover art (Source: signature found on the artwork)
Escape from Monkey Island (Windows - 2000, PS2 - 2001)
Cover art (European version only for the PS2 version) (Source: signature found on the artwork)
Timon & Pumbaa's Jungle Games (PC - 1995, SNES - 1997)
Cover art (Source: mentioned on the Box art: a gaming documentary kicktarter page)
Wild 9, AKA Wildroid 9 / ワイルドロイド9 (PS1 - 1998)
Character illustration (Source: signature found on the artwork)
The Making Of Earthworm Jim (book - 2019)
Cover art (Source: mentioned on the comic's official website)
Discworld II - Missing, presumed... !?
Earthworm Jim (Note: Some illustrations are missing)
Earthworm Jim 2 (Note: Some illustrations are missing)
Earthworm Jim: Special Edition (Windows version)
Escape from Monkey Island
Timon & Pumbaa's Jungle Games
Wild 9
The Making Of Earthworm Jim