Clockwiser

Clockwiser is a puzzle game, developed by Team Hoi. It was published in 1994 by Rasputin Software.

There are over hundred levels, which consist of various arrangements of blocks. Each level is divided into two sections, an active one on the left and a static one on the right. The player's task is to make the section on the left look exactly like the one on the right. The player cannot move individual blocks directly; instead, the player can select a rectangle-shaped group of blocks and move them along the rectangle's edge, either clockwise or counterclockwise. The blocks are subject to gravity, so moving a block on top of empty space makes it fall down. On later levels, various other objects come into play, such as metal blocks that can't be moved, teleporters, and bombs which destroy blocks they fall on.