Earthworm Jim 3D GOG.com Good Old Games + Exclusives DRM-FREE [no15 express]

What's cool about it:
Diverse levels and gameplay modes from basic platforming to pig-surfing
Great music and amusing sound effects
Loads of good humor and fun, often bordering on the disturbing
Overview:
Earthworm Jim, spineless superhero, wriggles back into action as the Groovy Guardian of Goodness in an incredible journey of cheese-curdling proportions. Left unconscious by a massive cow-induced blow to the head and clad in his indestructible, high-tech super suit, Earthworm Jim continues the battle for truth, justice and well aerated soil. He sure is going to need your help to guide him through his 3D fun-house of a brain.

But beware, the is an evil lurking, a presence in his mind, a dark unseen force at work - Jim's brain is a dangerous place! In the game you can enter Jim's psyche where he comes face to face with his own fears, happiness, memories and fantasies. Each environment has games-within-games, ludicrously large levels where you go wild pig-sliding, grandma wrangling and much more. You will face the weird enemies like Psycrow or the Disco Zombies. Explore any area you choose while keeping the trigger ready for action.