Penguin (UK) (1992) - Amstrad CPC - Platformer, Adventure.

The idea is the line up the diamonds (by pushing them together) into either a vertical or horizontal line. Or, if that's too difficult just settle for crushing the monsters and their eggs. All this has to be accomplished within a time limit. You push blocks and diamonds around by going up to them and pressing Fire and the appropriate direction key/joystick movement. If you can manage to push a block into a monster you crush it. Unfortunately, one of the remaining monster eggs hatches out soon afterwards. After Level 3, you have to fight off 3 monsters. And the second one can push blocks around. If you slide a block into the border around the playing area, it makes it wobble for a few seconds. Any monsters next to it will be momentary stunned.