Gish

Gish isn't your average hero, in fact he's not your average anything... see Gish is a ball of tar. A Sunday stroll with his lady friend Brea goes awry when a shadowy figure emerges from an open man hole and pulls Brea into the ground below. Following Brea's calls for help Gish suddenly finds himself in the subterranean sewers of Dross, a long forgotten city filled with twisting corridors, evil traps and some of the most demented creatures imaginable.

With his gelatinous structure as his only means of defense Gish must follow the echoing cries of his damsel in distress deep into the earth below. What freakish creatures dwell in this subterranean land? Who is Brea's captor? And just how far down does the rabbit hole go?

Life isn't easy when you're a 12 pound ball of tar...

Source:

chroniclogic.com

Gish isn't your average hero. In fact, he's not your average anything...you see, Gish is a ball of tar. A Sunday stroll with his lady friend, Brea, goes awry when a shadowy figure emerges from an open manhole and pulls Brea below ground. Following Brea's calls for help, Gish suddenly finds himself in the subterranean sewers of Dross, a long forgotten city filled with twisting corridors, evil traps, and some of the most demented creatures imaginable.
With his gelatinous structure as his only means of defense, Gish must follow the echoing cries of his damsel in distress deep within the earth below. What freakish creatures dwell in this subterranean land? Who is Brea's captor? And just how far down does the rabbit hole go?
Life isn't easy when you're a 12 pound ball of tar...
* Dynamic physics and lighting * Destructible environments * 34+ story levels * 20+ collection levels * 80+ player-made levels available for download * Six unique VS. modes * Unlockable game modes * Over 15 animated enemies * Six deranged bosses * Five "super secret" levels * Level editor

15 year ani. update features:
* The Lost Levels * Updated Physics engine * Widescreen supported * Updated menus * Updated levels

Source:

Steam Store Description