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I own this on the N64.
This doesn't have the same humor or charm as the originals (Earthworm Jim 1 and 2, which you can get here on gog, by the way). There are a handful of gags that are genuinely funny to me, but overall it doesn't save the game. The gameplay itself seems pretty average to me, and sometimes a little frustrating.
You'll probably get your money's worth out of this game, but only just. There's better games here on gog you could spend your money on, in my opinion.