Have you thought of having a minimum steps counter for each level so the player has a target to aim for on each level. Also when i walked into the red wall in level 5 i think the robot could walk on top of the counter and the game crashed. I have had this problem with cell based games, but have worked it out since, if you need any help give us a shout.

@actinium Yes I thought about the max number of steps in a level. I can't find the crash you mentioned. In which cell you have to go, that the game crashes?? @Entity1037 Why is it better using a, s, d, w instead the arrow keys??

On level 6 i push the red bal onto the whirly thing in the corner, then i transport to the whirly thing push up arrow and the red ball disappears but then i dont seem to be able to do anything else. Great concept, this game has legs.

That's harder with the number of steps limited. I finished the new level 6. I rather liked the battery, sad to see the battery consigned to the bin. :-)

I completed the following levels in the specified number of moves: Level 2: 43 Level 3: 80 Level 4: 104 Level 5: 57 (in case you wanted to make it harder)

I like the counter in. You get two puzzles for the price of one. First you figure out the level then you can figure out the shortest number of steps, which is a puzzle on its own. :-)

@actinium, I would think the mathematical solution would be too complex to even fathom. There are way to many variants involved: time and location are both interacting with each other. For instance, in level 2, start moving the green toward its final destination BEFORE the final push on the blue one. You will find that one of the moves in getting the green toward its destination will push the blue into its destination. This makes this one move double dutiful, saving two moves in the total move count (the other move is saved by not having to move back from having pushed blue into its final destination).

I used this code: http://www.greenfoot.org/topics/find/17166#post_17166 please help. In Greenfoot it works!!