Prolific Flash developer Nitrome's latest release is Swindler: The Great Drop N' Roller, a unique puzzle-platformer with rope rappelling mechanics.

Swinging from a rope made of his own stretchy mass, Swindler's starring pile of green goop must carefully avoid enemies and obstacles in order to reach the treasure chest at the end of each level. The gameplay mechanics consist of lowering and raising the character by pushing up and down on the arrow keys, and pushing left and right to rotate the environment.

It's quite challenging at first, and later puzzles prove difficult even after the controls are mastered. It's very satisfying to play, though, and the animation quality is superb. Also keep in mind that there are plenty of individual level walkthrough available on YouTube, if you happen to get stuck at any point.

[Thanks, jon!]