Push Blox

Here's an excerpt from Push Blox's Steam description:

Challenging block-pushing puzzle game, where the aim is to connect together all blocks of the same color. Navigate locks, conveyors, lasers, and other obstacles, amid fiendishly designed levels and contraptions.

Features:

• Hand-made puzzles

• Gradually increasing difficulty from simple to deep

• A relaxing, original guitar soundtrack

• Sleek, minimalist interface

Controls:

WASD or cursors to move; Z or Backspace to undo; F to toggle windowed play/full-screen; SPACE to run.

Note from developer:

There is a minor real-time element that does not result in any dexterity challenge or timing difficulties. This is a warning here in case you can't tolerate any timing in your puzzle games - no matter how oblique and secondary they are to the actual puzzles in the present case. If you are such a person I would still recommend you play the game, but you have been given fair warning!