The concept of the game is good, and a few modifications (in my opinion) would make it a great little game. Either have a camera following the player or reduce the game area. The character graphics are nice, but they were too small to see. The "G " was a poor choice,  using "E" or "Q" would have been better, and an alternative key to the mouse button would be nice. 

Good but a little weird game:)

Despite the fact, that all is very small in this game, I saw very nice pixel graphic! Cool sound of pulling and pushing, I would like to hear background music)